Kubota M5-111 service schedule

Kubota M5 series · 2016–2020 (UK M5001 series, sold as M5111); replaced by the Stage V M5-112 (see watch)

Every maker's service job for the Kubota M5-111, counted in hours, with the oils, filters and parts each one needs. Add your tractor to Farmyard Workshop and it works out what's due from your hours and dates, and keeps the service history.

Track your M5-111 for free

Service intervals

Job	When
Air cleaner primary element: clean	every 100 hours
Drain water from the fuel tank	every 200 hours
Water separator: clean	every 400 hours
Engine oil and filter change	every 500 hours
Fuel filter replacement	every 500 hours
Hydraulic oil filters: replace	every 500 hours
Front axle pivot: adjust	every 600 hours
Air cleaner primary and secondary elements: replace	every 1,000 hours or every year
Transmission and hydraulic oil and filters change	every 1,000 hours
Front differential and axle gear case oil change	every 1,000 hours
Engine valve clearance: dealer check	every 1,000 hours
Crankcase oil separator element: replace	every 1,500 hours
1,500-hour dealer checks (injectors, AdBlue injector tip, PCV valve, EGR cooler)	every 1,500 hours
Coolant flush and change	every 2,000 hours or every 2 years
AdBlue (DEF) pump filter: replace	every 3,000 hours
DPF ash cleaning and 3,000-hour dealer checks	every 3,000 hours
Radiator, fuel and intake hoses: replace	every 4 years
Cab air filters (including carbon filter where fitted)	when needed

Service jobs and parts

Air cleaner primary element: clean

Engine · every 100 hours

Kubota's handbook points to cleaning the primary (outer) element every 100 hours. Clean it more often in dusty work, and open the dust valve weekly, or daily in dust.

Step-by-step

Stop the engine and take the key out. Never run the engine with the element out.
Take off the cover and pull out the primary element. Leave the secondary (inner) element alone.
Blow dry dust out from the inside outwards at low pressure. Never oil the element; it is a dry type.
Wipe the housing with a damp cloth and refit the element.
Refit the cover with its arrow pointing up, so the dust valve works.

Tools: Compressed air (low pressure), Torch, Damp cloth

Drain water from the fuel tank

Fuel · every 200 hours

Kubota says drain sediment and water from the fuel tank every 200 hours, more often if the fuel is dirty, and before using the tractor after storage.

Step-by-step

Park on level ground, stop the engine and take the key out.
Loosen the drain plug at the bottom of the left fuel tank and let sediment and water run out into a container.
Retighten the plug. The tank is plastic, so do not overtighten.

Tools: Container, Spanner

Water separator: clean

Fuel · every 400 hours

Kubota says clean the water separator every 400 hours, and check and drain it daily. Water in the fuel damages the supply pump and injectors.

Part	Qty	Notes	Part number
Water separator element (if renewing)	1	No number found; check your handbook	check your handbook

Step-by-step

Stop the engine, take the key out and keep naked flames away.
Close the fuel tap, then take the separator bowl off and catch the fuel.
Wash out the bowl and element in clean diesel and check the O-ring.
Refit the bowl, open the tap and bleed the fuel system.
Start the engine and check for leaks.

Tools: Container for fuel, Rags, Gloves

Engine oil and filter change

Engine · every 500 hours

Kubota says change the engine oil and filter every 500 hours. Use DPF-compatible (API CJ-4) oil, because the wrong oil blocks the DPF with ash. Kubota says use only a genuine filter.

Part	Qty	Notes	Part number
Engine oil	1	10W-30 or 15W-40. API CJ-4, ≈10.7 L with filter. Aztec Oils match: EMPROTEC UHPD-X 10W-30 FE	check your handbook
Engine oil filter	1	OEM number from a maintenance kit listing for the M5-111; confirm with your dealer	HH1C0-32430

Step-by-step

Warm the engine, then park on level ground, lower the linkage and loader, stop the engine, take the key out and chock the wheels.
Let it stand a few minutes. Hot oil burns, so wear gloves.
Remove the sump plug and let the oil drain fully.
Remove the filter, check the old seal came off, and wipe the filter head clean.
Oil the new filter seal, screw it on until the seal touches, then tighten by hand half a turn more.
Refit the plug and fill with new oil to the upper notch on the dipstick.
Run the engine for a minute, check for leaks, stop it and recheck the level.

Tools: Drain tray (15 L), Filter wrench, Socket for sump plug, Funnel, Rags, Gloves

Fuel filter replacement

Fuel · every 500 hours

Kubota lists the fuel filter with the 500-hour service. A dirty filter or water separator can damage the supply pump and injectors early on a common-rail engine.

Part	Qty	Notes	Part number
Fuel filter	1	A parts seller lists 1G410-52300 for all M5-111 builds and the M5L-111. A maintenance kit for the M5-111HDC lists HH166-43560 instead, so check your handbook or ask your dealer	1G410-52300

Step-by-step

Stop the engine, take the key out and chock the wheels. Keep naked flames away.
Clean around the filter before opening anything.
Remove the old filter and catch the fuel in a container.
Fit the new filter with a clean, oiled seal, hand-tight plus half a turn.
Bleed the fuel system as the handbook describes (key on, without the glow heater running). Never crack open the high-pressure pipes.
Do not crank for more than 10 seconds at a time; wait 30 seconds between tries. Check for leaks.

Tools: Container for fuel, Filter wrench, Rags, Gloves

Hydraulic oil filters: replace

Hydraulics · every 500 hours

Kubota lists the two hydraulic oil filters with the 500-hour service, more often than the 1,000-hour transmission oil change, so this is a filter-only task. Kubota says use genuine filters.

Part	Qty	Notes	Part number
Hydraulic oil filter	2	OEM number from M5-111 kit and parts listings; confirm with your dealer	HHTA0-37710

Step-by-step

Park on level ground, lower the linkage and loader, stop the engine, take the key out and chock the wheels.
Let hot oil cool before starting; it burns.
Clean around both filters, remove them and catch the oil.
Oil the new filter seals and fit them hand-tight plus half a turn.
Run the engine briefly, stop it, check for leaks and top up with Super UDT2 to the upper notch on the dipstick.

Tools: Drain tray, Filter wrench, Rags, Gloves

Front axle pivot: adjust

Front axle · every 600 hours

Kubota says check and adjust the front axle pivot every 600 hours. Play here wears bushes and makes steering vague.

Step-by-step

Park on level ground, stop the engine, take the key out and chock the rear wheels.
Follow the handbook's adjusting procedure for the pivot bolt and locknut.
If you are not sure, have your dealer do it.

Tools: Spanners, Jack and axle stands

Air cleaner primary and secondary elements: replace

Engine · every 1,000 hours or every year

Kubota says replace both the primary (outer) and secondary (inner) air cleaner elements every 1,000 hours or every year, whichever comes first.

Part	Qty	Notes	Part number
Primary (outer) air element	1	OEM number from M5-111 kit and parts listings; also sold as Fleetguard AF25557	59700-26112
Secondary (inner) air element	1	OEM number from M5-111 kit and parts listings	55231-26150

Step-by-step

Stop the engine and take the key out.
Take off the cover and remove the primary element, then the secondary element.
Wipe the housing out with a damp cloth. Do not let dirt fall into the intake.
Fit the new secondary, then the new primary element. Check they seat evenly.
Refit the cover with its arrow pointing up.

Tools: Torch, Damp cloth

Transmission and hydraulic oil and filters change

Transmission · every 1,000 hours

Kubota says change the transmission fluid every 1,000 hours. The two hydraulic filters are changed with it, and the magnetic filter is cleaned.

Part	Qty	Notes	Part number
Kubota Super UDT2	1	≈60 L	check your handbook
Hydraulic oil filter	2	Change with the oil	HHTA0-37710

Step-by-step

Park on level ground, lower the linkage and loader, stop the engine, take the key out and chock the wheels.
Let hot oil cool for a while, then remove the drain plugs and drain the oil.
Replace both hydraulic filters and take out and clean the magnetic filter.
Refit the plugs and fill with Super UDT2 to the upper notch on the dipstick.
Run the engine, work the linkage and spools, lower everything and recheck the level.

Tools: Large drain tray (70 L), Spanners, Filter wrench, Pump or funnel, Gloves

Front differential and axle gear case oil change

Front axle · every 1,000 hours

The handbook gives the front differential and both axle gear cases their own oil. Kubota lists this change right after the 1,000-hour transmission oil change (some page indexes show 600 hours, so check your handbook).

Part	Qty	Notes	Part number
Kubota Super UDT2	1	≈6.0 L differential + ≈3.5 L each gear case	check your handbook

Step-by-step

Park on level ground, lower implements, stop the engine, take the key out and chock the wheels.
Drain the differential through its drain plug, and both gear cases through their right and left drain plugs.
Refit the drain plugs.
Fill the differential until oil reaches the bottom edge of the check plug hole.
Fill each gear case up to its filler hole, refit all plugs and wipe the axle clean.

Tools: Drain tray, Spanners, Oil pump or squeeze bottle

Engine valve clearance: dealer check

Engine · every 1,000 hours

Kubota lists the valve clearance adjustment with the 1,000-hour service and says ask your dealer. The handbook gives no clearance figure.

Step-by-step

Book this with your Kubota dealer, ideally with the 1,000-hour oil service.

Tools: Dealer service

Crankcase oil separator element: replace

Engine · every 1,500 hours

Kubota says replace the oil separator (crankcase breather) element every 1,500 hours. A blocked breather pushes oil out of seals and into the intake.

Part	Qty	Notes	Part number
Oil separator element	1	No number found; check your handbook	check your handbook

Step-by-step

Stop the engine, take the key out and let the engine cool.
Clean around the separator housing and remove the cover.
Fit the new element with its O-ring and refit the cover.
Run the engine and check for oil leaks.

Tools: Spanners or screwdriver, Rags

1,500-hour dealer checks (injectors, AdBlue injector tip, PCV valve, EGR cooler)

Engine · every 1,500 hours

Kubota says have the dealer check fuel injection pressure, the AdBlue injector tip, the PCV valve and the EGR cooler every 1,500 hours. You can check the AdBlue lines yourself for damage.

Step-by-step

Check the AdBlue lines from the tank to the injector are secure and not cracked or rubbing.
Book the injector, AdBlue injector tip, PCV and EGR cooler checks with your Kubota dealer.

Tools: Dealer service

Coolant flush and change

Cooling · every 2,000 hours or every 2 years

Kubota says change the coolant every 2,000 hours or 2 years, whichever is sooner. Kubota long-life coolant lasts 2 years. Never mix in another maker's long-life coolant.

Part	Qty	Notes	Part number
Kubota long-life coolant	1	50% mix, ≈10 L plus ≈1.0 L reserve tank	check your handbook

Step-by-step

Only work on a cold engine. Open the cap slowly to let pressure out.
Drain the radiator and block into a tray. Dispose of old coolant properly.
Flush with clean water, then refit the plugs.
Fill with a 50% mix of Kubota long-life coolant and top up the reserve tank.
Run the engine to working temperature, let it cool and top up again.

Tools: Drain tray (15 L), Hose, Coolant tester

AdBlue (DEF) pump filter: replace

Exhaust · every 3,000 hours

Kubota lists the AdBlue pump filter in the 3,000-hour service. AdBlue keeps circulating to cool the injector after the engine stops, so wait until that has finished.

Part	Qty	Notes	Part number
AdBlue (DEF) filter	1	A parts seller lists it as a genuine AdBlue filter for the M5091/M5111; confirm it is the pump filter (not the tank filter) with your dealer	1J508-19660

Step-by-step

Stop the engine, take the key out and wait for the AdBlue circulation to stop.
Clean around the pump cover, then remove it.
Take out the old filter assembly and fit the new one.
Refit the cover. Do not put oil on the cover O-ring.
Wash off any spilt AdBlue with water; it corrodes metal and wiring.

Tools: Spanner or socket for pump cover, Rags, Gloves, Water for spills

DPF ash cleaning and 3,000-hour dealer checks

Exhaust · every 3,000 hours

Kubota's handbook lists DPF ash cleaning at 3,000 hours. This needs a special cleaning machine. The same service covers dealer checks of the turbo, supply pump, intake air heater, EGR system and AdBlue injector. The AdBlue tank filter is a dealer job at 9,000 hours.

Part	Qty	Notes	Part number
DPF ash cleaning	1	Dealer service	check your handbook

Step-by-step

Book this with a Kubota dealer.
Never work near the exhaust or DPF until it has cooled; it runs very hot, especially after a regeneration.

Tools: Dealer service

Radiator, fuel and intake hoses: replace

Cooling · every 4 years

Kubota says check the radiator hoses and clamps every 500 hours and replace them every 4 years, or sooner if swollen, hard or cracked. The fuel hoses and intake air line are also renewed at 4 years (dealer). The DPF, EGR and breather rubber pipes are a dealer job every 2 years.

Part	Qty	Notes	Part number
Radiator hoses and clamps	1	Check your handbook	check your handbook

Step-by-step

On a cold engine, drain enough coolant to get below the hoses.
Fit new hoses and clamps, then refill and bleed as in the coolant task.
Book the fuel hoses, intake line and 2-yearly rubber pipes with your dealer.

Tools: Screwdrivers, Drain tray, Coolant

Cab air filters (including carbon filter where fitted)

Cab · when needed

The handbook we could read is for the open-station M5L-111 and does not cover cab filters, so the interval is not known. Check your handbook, clean the filters more often in dust, and change a carbon filter after spraying.

Part	Qty	Notes	Part number
Cab fresh air filter	1	No number found; check your handbook	check your handbook
Cab activated carbon filter (where fitted)	1	No number found for the standard M5111; check your handbook	check your handbook

Step-by-step

Stop the engine and take the key out.
Open the filter cover and remove the element.
Wear a dust mask. Tap a paper filter clean gently, or fit a new one if damaged.
Bag an old carbon filter and dispose of it as chemical waste.
Refit the cover and check it seals.

Tools: Screwdriver, Dust mask, Gloves

Oils, fluids and capacities

System	Oil or spec	Capacity
Engine	Kubota V3800 3.8 L (3,769 cc) 4-cylinder common-rail turbo intercooled diesel with EGR, DOC/DPF and SCR (AdBlue)
Engine oil	DPF-compatible low-ash oil, API CJ-4. SAE 10W-30 or 15W-40 for -10 to 25 °C (US handbook). Check your UK handbook for the ACEA grade.	≈10.7 L with filter
Coolant	Kubota long-life coolant, 50% mix, ≈10 L plus ≈1.0 L in the reserve tank
Valve clearances	No figure in the operator's manual. Kubota says this is a dealer job.
Transmission and hydraulics (shared)	Kubota Super UDT2	≈60 L
Front differential case (4WD)	Kubota Super UDT2 (handbook also allows SAE 80–90 gear oil)	≈6.0 L
Front axle gear cases (hubs), each side	Kubota Super UDT2 (handbook also allows SAE 80–90 gear oil)	≈3.5 L
Engine oil	API CJ-4, DPF-compatible	≈10.7 L with filter
Cooling system	Kubota long-life coolant, 50% mix	≈10 L + ≈1.0 L reserve tank
AdBlue (DEF) tank	AdBlue / DEF to ISO 22241	≈12.3 L
Fuel tank	Diesel (ultra-low sulphur)	≈105 L (sources differ; see notes)
Grease points	Multipurpose grease NLGI 2	—

Specifications


Engine power	113 hp (84.3 kW) gross (UK M5111); the US M5L-111 handbook gives 105.6 hp rated, 89 hp PTO
Rated engine speed	2,400 rpm; low idle 800–850 rpm
Transmission	36-speed with hydraulic shuttle
Hydraulic pump	64 L/min
Rear linkage	Category II, lift ≈4,100 kg at the ends
PTO	Rear 540/540E standard, 540/1000 optional
Weight	≈3,420 kg (cab tractor)
Wheelbase	2,250 mm
Fan belt deflection	10–12 mm at mid-span
Front wheel toe-in (4WD)	2–8 mm
Brake pedal free travel	7–14 mm, the same on both pedals
Tyre pressures	Check your handbook

Known problems

Wrong engine oil blocks the DPF

Kubota says use DPF-compatible (API CJ-4, low-ash) oil. Ordinary high-ash oil fills the DPF with ash that regeneration cannot burn off.

AdBlue quality

Use only clean AdBlue to ISO 22241 and keep the cap shut. The pump filter is changed at 3,000 hours and the tank filter is a dealer job at 9,000 hours.

Water in fuel

Kubota warns that a neglected water separator or fuel filter can damage the supply pump and injectors early. Drain the separator daily and the tank every 200 hours.

Stage V M5-112 differs

The Stage V M5-092/M5-112 keeps the 3.8 L engine with DOC, DPF and SCR, but trade press gives a 6,000-hour DPF service interval and lower-rpm regeneration. Check the M5-112 handbook rather than this schedule.

Fuel filter number conflict

Parts listings give 1G410-52300 and a kit gives HH166-43560 for the fuel filter. Check against your serial number before ordering.

Fault codes: SAE J1939 engine codes: how to read SPN and FMI

Any modern electronic diesel engine

Code	Meaning	What to do
SPN 91	Accelerator pedal position	Power may be limited. Check the pedal plug.
SPN 94	Fuel delivery (lift pump / filter) pressure	Check fuel level and filters; look for air in the fuel.
SPN 97	Water in fuel	Drain the water separator.
SPN 100	Engine oil pressure	FMI 1 means stop at once. Check the oil level.
SPN 102	Boost (turbo) pressure	Check air filter and intake for leaks.
SPN 105	Intake manifold (charge air) temperature	Clean the cooler and intake.
SPN 110	Engine coolant temperature	FMI 0 means overheating: stop and let it cool.
SPN 157	Common rail fuel pressure	Check fuel filters. Call your dealer.
SPN 168	Battery voltage	Check the battery, terminals and alternator.
SPN 174	Fuel temperature	Call your dealer if high or erratic.
SPN 190	Engine speed	Check the sensor plug if the rev counter misbehaves.
SPN 1136	Engine controller temperature	Let it cool; check engine bay ventilation.
SPN 3216	SCR catalyst conversion efficiency (exhaust AdBlue system)	Check DEF quality and level. Call your dealer.
SPN 3361	DEF (AdBlue) dosing unit	Check the DEF tank level; call your dealer.
SPN 4094	DEF (AdBlue) tank level	Fill the DEF tank. Power will be cut if it runs out.
FMI 0	Reading valid but well above normal (most severe)	Treat as a real problem: stop and check, for example temperature or pressure.
FMI 1	Reading valid but well below normal (most severe)	Treat as a real problem: for oil pressure, stop the engine at once.
FMI 2	Erratic, intermittent or wrong data	Check the plug and wiring at the sensor.
FMI 3	Voltage above normal or wiring shorted to supply	Sensor or wiring fault. Check the plug.
FMI 4	Voltage below normal or wiring shorted to ground	Sensor or wiring fault. Check the plug.
FMI 5	Current below normal or open circuit	A wire has come off or a part has failed. Check the plug.
FMI 6	Current above normal or grounded circuit	A short to ground. Check wiring for chafing.
FMI 7	Mechanical part not responding or out of adjustment	Not electrical: check the part moves freely.
FMI 8	Abnormal frequency or pulse width	Signal fault. Check the sensor and wiring.
FMI 9	Abnormal update rate (message arriving too slowly or too fast)	Often a network fault. Switch off and restart.
FMI 10	Abnormal rate of change	Reading changing too fast. Check the sensor.
FMI 11	Failure detected, exact cause not known	Call your dealer.
FMI 12	Controller or device faulty	Usually needs a replacement part: call your dealer.
FMI 13	Out of calibration	Call your dealer to recalibrate.
FMI 14	Special instructions: the maker has its own steps	Call your dealer.
FMI 15 / 16	Reading above normal: least severe / moderately severe	Warning stage. Ease off and check, for example coolant.
FMI 17 / 18	Reading below normal: least severe / moderately severe	Warning stage. Check the system named.
FMI 19	Data received over the network carries an error flag	Check the sensor plugged into the other controller.
FMI 20 / 21	Data drifted high / drifted low compared with other readings	Sensor may be failing. Call your dealer.
FMI 31	The condition named by the SPN exists (no more detail), or not available	Read the SPN name for what it means.

Fault codes: Kubota common-rail engine codes (P and U codes, DPF and DEF)

Engine controller (Kubota V-series common-rail diesels)

Code	Meaning	What to do
P0087	Fuel rail pressure too low (pressure limiter opened)	Check fuel level and filters. Call your dealer.
P0088	Fuel rail pressure too high	Stop. Call your dealer.
P0089	Fuel pump control valve (SCV) stuck	Call your dealer.
P0093	High-pressure fuel leak	Stop. Look for fuel leaks but do not touch a leaking high-pressure line. Call your dealer.
P0101 / P0102 / P0103	Air flow (MAF) sensor fault or low air flow	Check the air filter and intake. Call your dealer if it persists.
P0112 / P0113	Intake air temperature sensor fault	Check the plug. Call your dealer.
P0117 / P0118	Coolant temperature sensor fault	Temperature reading unreliable: watch for overheating. Call your dealer.
P0182 / P0183	Fuel temperature sensor fault	Call your dealer.
P0192 / P0193	Rail pressure sensor fault	Call your dealer.
P0217	Engine overheating	Stop and idle, then switch off. Check coolant (cold only) and radiator.
P0219	Engine overspeed	Switch off. Call your dealer.
P0237 / P0238	Intake air pressure sensor fault	Call your dealer.
P0335 / P0336	Crankshaft sensor fault	Hard starting or stalling. Call your dealer.
P0340 / P0341	Camshaft (cylinder recognition) sensor fault	Hard starting. Call your dealer.
P0380 / P0381	Glow plug (air heater) relay fault	Hard cold starting. Check the heater fuse; call your dealer.
P0400 / P2413 / P2414	EGR (exhaust recirculation) valve fault or stuck	Call your dealer.
P0501 / P0503	Vehicle speed sensor fault	Check the plug. Call your dealer.
P0524	Engine oil pressure fault	Stop the engine. Check the oil level; call your dealer if it is right.
P0543 to P0547	Exhaust gas temperature sensor fault (DPF)	Call your dealer.
P0561 to P0563	Battery voltage fault	Check the battery, terminals and alternator.
P0605 / P0606	Engine controller (ECU) memory or processor fault	Call your dealer.
P0616 / P0617	Starter switch circuit fault	Check the key switch and starter fuses. Call your dealer.
P062B / P062D	Injector drive fault	Rough running. Call your dealer.
P0687	Main relay fault	Check the relay and fuse. Call your dealer.
P1990	Controller memory (EEPROM) checksum error	Call your dealer.
P204F / P20F5	DEF (AdBlue) level too low	Fill the DEF tank. If you ignore it, power will be cut back.
P208B	DEF (AdBlue) freeze warning	Let the system thaw. Do not add water.
P2122 to P2135	Accelerator pedal sensor faults (sensor 1 / 2 / CAN / correlation)	Power may be limited. Check the plugs; call your dealer.
P2227 to P2229	Atmospheric pressure sensor fault	Call your dealer.
P2293	Rail pressure sensor fault after pressure limiter opened	Stop and call your dealer.
P242C / P242D	Exhaust gas temperature sensor 2 fault	Call your dealer.
P2454 / P2455	DPF differential pressure sensor fault	Call your dealer.
P2621 / P2622	Intake throttle lift sensor fault	Call your dealer.
P3001	Emissions deterioration detected	Call your dealer.
P3002 to P3004	Exhaust gas temperature too high (emergency)	Stop and move away from flammable material. Switch off and call your dealer.
P3006 to P3008	Excessive soot in the DPF	Do a parked regeneration if the handbook allows. If it stays, call your dealer.
P3011	Boost pressure low	Check air filter and intake for leaks. Call your dealer.
P3013	Parked regeneration timed out	Try again in a safe open place. Call your dealer if it fails.
P3023 / P3025	Exhaust temperature high after a warning (overheat pre-caution)	Park clear of crop or straw and let it cool. Call your dealer.
P3024	DPF regenerating too often	Check oil grade and running pattern. Call your dealer.
U0075 / U0077	CAN bus off	Switch off and restart. Call your dealer if it returns.
U0076	No communication with the EGR actuator	Call your dealer.
U0081 to U0089	CAN message (frame) errors between controllers	Switch off and restart. Call your dealer if it returns.

Fault codes: Kubota M series tractor E codes (display error numbers)

Main, meter and engine controllers

Code	Meaning	What to do
E-1 / E-2 / E-3	Accelerator sensor fault (main / sub / main and sub disagree)	Engine power may be limited. Check the pedal and hand throttle plugs. Call your dealer.
E-4 / E-5 / E-6 / E-7	Forward/reverse shuttle lever sensor fault (main / sub / disagree / signal)	Shuttle may not work. Check the lever plug under the column. Call your dealer.
E-8	Gear lock signal fault	Call your dealer.
E-11	PTO relay fault	PTO may not engage. Check the PTO fuse and relay.
E-12	4WD solenoid fault	Four-wheel drive may not engage. Call your dealer.
E-13	Bi-speed turn solenoid fault	Call your dealer.
E-14 / E-15	Shuttle forward solenoid fault	Call your dealer.
E-17	Differential lock solenoid valve fault	Differential lock may not work. Call your dealer.
E-20	Engine controller to instrument panel communication fault	Switch off and restart. Call your dealer if it returns.
E-21	Range gear shift (high) switch fault	Call your dealer.
E-22	Main gear shift (6th) switch fault	Call your dealer.
E-23	Shuttle rotating sensor fault	Call your dealer.
E-24	Machine speed sensor fault	Check the sensor plug. Call your dealer.
E-25	DPF regeneration malfunction	Do a parked regeneration as the handbook says (safe open place, enough fuel). If the code remains, call your dealer.
E-30	Controller memory fault	Call your dealer.
E-31	Instrument panel and controller part code mismatch	Call your dealer.
E-40	Lever sensor input voltage fault	Call your dealer.
E-41	Engine communication fault (engine controller and main controller)	Switch off, wait a minute and restart. The workshop manual says this one is normally only logged in the error history, not shown on the meter.
E-42	Meter and main controller communication fault (also logged-only per the workshop manual)	Switch off and restart. Call your dealer if it shows.
E-43	Controller or meter communication fault	Switch off and restart. Call your dealer if it shows.
E-50	Shift lever sensor fault	Call your dealer.
E-60	Proportional pressure reducing valve failure	Gear changes may be poor. Call your dealer.
E-61 to E-66	Transmission solenoid 1 to 6 fault	A gear or range may be lost. Call your dealer.
E-75	Accelerator sensor reading out of range	Call your dealer.
E-84	Accelerator sensor needs adjusting	Call your dealer to set it up.
E-93	Engine starter relay fault	Check the starter relay and fuse. Call your dealer.
E-94	Engine shut-off relay fault	Check the relay and fuse. Call your dealer.
E-95	PTO solenoid fault	PTO may not engage. Call your dealer.
E-99	Communication fault	Switch off and restart. Call your dealer if it returns.
ENG NG	Engine controller communication failure	Switch off and restart. Check the fuses and plug on the engine controller. Call your dealer.
ECU NG	Main controller communication failure	Switch off and restart. Call your dealer if it returns.
ERROR-NET	Network (CAN) communication fault	Switch off and restart. Call your dealer if it returns.
E00	Instrument panel memory fault	Call your dealer.

Repair guides

DPF regeneration and AdBlue warnings (Specialist, 30 minutes for owner checks; a parked regeneration usually takes 15–20 minutes): Regeneration or engine-speed lamp flashing, buzzer sounding, parked regeneration lamp flashing, power cut to about half, engine held at idle, AdBlue lamp or SCR icon on the display, a code such as P208B on the screen.
Water in fuel, fuel filter and bleeding the fuel system (Moderate, 30–60 minutes): Water separator lamp on with the buzzer, hard starting or no start, engine stalls or loses power, engine stops after the tank ran dry or after a filter change.
Hydraulic shuttle and transmission warning codes (Specialist, 30 minutes for owner checks; repairs are a dealer job): Master system warning lamp blinking with an ERROR code on the display, shuttle will not engage forward or reverse, 4WD or bi-speed turn not working, transmission controls dead.
PTO will not engage or engine will not start (Easy, 15–30 minutes): PTO lamp blinking and the shaft not turning, engine will not crank, engine will not rev up with the PTO on, buzzer when leaving the seat, wrong PTO speed shown on the display.
Brake pedal, parking brake and wheel nut checks (Moderate, 30–60 minutes): Tractor pulls to one side when braking with pedals locked, long or uneven pedal travel, tractor rolls with the parking brake on, wheel nuts loose or wheel wobbling.
Overheating, fan belt, starting and charging checks (Moderate, 1–2 hours): Temperature gauge high, engine warning lamp, belt squeal, charge lamp on, slow or no cranking, lights dim, intake heater not working in cold weather.

The full step-by-step guides are in Farmyard Workshop once you add your tractor.

Parts list with genuine part numbers

Kubota M5-111 - maker filter/service sheets and parts lists already cited on the site entry; serial splits are in the row notes

Engine service

Part	Part number	Qty	Notes
Engine oil filter	HH1C0-32430	1	OEM number from a maintenance kit listing for the M5-111; confirm with your dealer
Primary (outer) air element	59700-26112	1	OEM number from M5-111 kit and parts listings; also sold as Fleetguard AF25557
Secondary (inner) air element	55231-26150	1	OEM number from M5-111 kit and parts listings

Fuel

Part	Part number	Qty	Notes
Fuel filter	1G410-52300	1	A parts seller lists 1G410-52300 for all M5-111 builds and the M5L-111. A maintenance kit for the M5-111HDC lists HH166-43560 instead, so check your handbook or ask your dealer
AdBlue (DEF) filter	1J508-19660	1	A parts seller lists it as a genuine AdBlue filter for the M5091/M5111; confirm it is the pump filter (not the tank filter) with your dealer

Transmission and hydraulics

Part	Part number	Qty	Notes
Hydraulic oil filter	HHTA0-37710	2	OEM number from M5-111 kit and parts listings; confirm with your dealer

Sources

Open Farmyard Workshop