HomeMTUMTU 12V 2000 G43

MTU 12V 2000 G43 Generator Set

The MTU 12V 2000 G43 is a 736 kW diesel standby generator set powered by a MTU 12V2000G43 engine. It operates at 60 Hz. It holds about 67 L (17.7 gal) of oil and 90 L (23.8 gal) of coolant. The set measures 2020×1580×1690 mm (79.5×62.2×66.5 in) and weighs about 2490 kg (5490 lb).

736 kW
Standby
23.9 L
Displacement
67.0 L
Oil capacity
1
Document types

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Specifications

Fueldiesel
Frequency60.0 Hz
Standby power736 kW
EmissionsEPA 40 CFR89 / Tier 1
Oil capacity67.0 L
Coolant capacity90 L
Dimensions (L×W×H)2020×1580×1690 mm
Dry weight2490 kg

Engine

MTU 12V2000G43
Oil capacity67.0 L
Coolant capacity180.0 L
Displacement23.9 L
AspirationTurbo Air/Air DC
Rated speed1800 rpm

Common questions

What is the power rating of the MTU 12V 2000 G43?

The MTU 12V 2000 G43 is rated 736 kW standby.

What engine does the MTU 12V 2000 G43 use?

The MTU 12V 2000 G43 is powered by the MTU 12V2000G43 engine.

What fuel does the MTU 12V 2000 G43 use?

The MTU 12V 2000 G43 runs on diesel.

What is the oil capacity of the MTU 12V 2000 G43?

The MTU 12V2000G43 engine in the MTU 12V 2000 G43 has an oil capacity of 67.0 liters.

Troubleshooting

42

Fault codes

CodeMeaningCauseRemedy
084HP fuel system leaking, Contact Service.System contains air
082RAIL Pressure in HP fuel system Contact Service.PRESSURE exceeds specified value;Solenoid valve of HP fuel control block jamming or wiring to solenoid valve defective

Symptoms & remedies

SymptomCauseRemedy
Injector defectiveReplace (— Page 6 - 18)
Injection pump defectiveReplace (— Page 6-15)
Engine wiring DefectiveCheck (— Page 6-62)
Engine OverloadedContact Service.
Engine speed not steadyComponent Probable Cause Task Speed sensor Defective Contact Service.
Fuel system Not ventedVent fuel system (— Page 6-23)
ECU DefectiveContact Service.
Coolant leaks on intercoolerComponent Probable Cause Task Intercooler Leaking, major coolant discharge Contact Service.
Exhaust gas blackComponent Probable Cause Task Air filter clogged Check signal ring position of service indicator (= Page 6 - 37). Fuel injection equipment Injector defective Replace (> Page 6-18). Injection pump defective Replace (> Page 6-15). Engine Overloaded Contact Service.
Exhaust gas blueComponent Probable Cause Task Engine oil Too much oil in engine Drain engine oil (+> Page 6-39). Oil separator of crankcase breather contaminated Replace (— Page 6-08). Exhaust turbocharger, cylinder head, piston rings, cylinder liner Defective Contact Service.
Exhaust gas whiteComponent Probable Cause Task Engine Not at operating temperature Run engine to reach operating temperature. Fuel system Water in fuel Check fuel system on fuel prefilter. Drain fuel prefilter (+ Page 6-28). Intercooler Leaking Contact Service.
Coolant temperature too highComponent Probable Cause Task T-LUBE OIL Lube-oil temperature too high (1st limit) Reduce power. T-LUBE OIL Lube-oil temperature too high (2nd limit) 1. Reduce power. T-COOLANT temperature too high (1st limit); warning Reduce power. T-COOLANT temperature too high (2nd limit); automatic engine shutdown 1. Allow the engine to cool down. 2. Check coolant cooler (elements etc.) and clean contaminated parts (see manufacturer's documentation). 3. Re-start the engine (= Page 3-03). 4. If fault occurs repeatedly: Contact Service.
Fuel supply pressure too lowComponent Probable Cause Task P-FUEL supply pressure too low (1st limit) 1. Check fuel lines for leaks; repair defective lines. 2. Clean fuel prefilter (= Page 6 — 26). 3. Flush fuel prefilter (— Page 6 — 30). 4. Replace filter element of fuel prefilter (> Page 6-32). 5. Replace filter element of fuel prefilter (> Page 6-25). 6. If fault is not rectified: Contact Service. P-FUEL supply pressure too low (2nd limit) 1. Check fuel lines for leaks; repair defective lines. 2. Clean fuel prefilter (> Page 6 - 26). 3. Flush fuel prefilter (— Page 6 — 30). 4. Replace filter element of fuel prefilter (— Page 6-32), 5. Replace filter element of fuel prefilter (— Page 6-25). 6. If fault is not rectified: Contact Service.
Violation of first limit for external temperatureComponent Probable Cause Task Depending on the corresponding measuring point, which is read via CAN 1 bus
Engine does not turn when starter is actuatedBattery Low or defective, Cable connections defective, Engine wiring or starter defective, Engine wiring DefectiveCharge or replace battery (see manufacturer's documentation), Check if cable connections are properly secured (see manufacturer’s documentation), Check if cable connections are properly secured, contact Service, Check (> Page 6-62)
Engine turns but does not fireStarter Poor rotation by starter: Battery low or defective, Engine wiring Defective, Fuel system Not vented, ECU DefectiveCharge or replace battery (see manufacturer’s documentation), Check (> Page 6-62), Vent fuel system (— Page 6-23), Contact Service
Engine fires unevenlyFuel injection equipment Injector defective, Injection pump defective, Engine wiring Defective, Fuel system Not vented, ECU DefectiveReplace (— Page 6 - 18), Replace (— Page 6 - 15), Check (> Page 6-62), Vent fuel system (— Page 6-23), Contact Service
Engine does not reach nominal speedFuel supply Fuel prefilter clogged, Fuel filter clogged, Air supply Air filter cloggedReplace (— Page 6 — 32), Replace (— Page 6-25), Check signal ring position of service indicator (= Page 6 - 37)
Engine speed lower than 200 rpm; automatic engine shutdownRe-start the engine (— Page 3-03).
Idle speed not reached within a specified period; Termination of starting procedure.Note further alarms.
Run-up speed not reached within a specified period; Termination of starting procedure.Note further alarms.
Starter speed not reached within a specified period; Termination of starting procedure.Note further alarms.
Coolant preheating Check preheating pump / preheating system (see manufacturer's documentation). Termination of starting procedure (depending on project design)Coolant preheating Check preheating pump / preheating system (see manufacturer's documentation).Termination of starting procedure (depending on project design)
Check sum error of measuring-point data in ECU. If fault occurs repeatedly: Contact Service.Contact Service.
Check sum error of measuring-point data in IDM. If fault occurs repeatedly: Contact Service.Contact Service.
Accumulated fuel consumption data in EDM (redundant data record 1). If fault occurs repeatedly: Contact Service.Contact Service.
Accumulated fuel consumption data in EDM (redundant data record 2). If fault occurs repeatedly: Contact Service.Contact Service.
Hour meter data in EDM NOT VALID. If fault occurs repeatedly: Contact Service.Contact Service.
Hour meter data in IDM NOT VALID. If fault occurs repeatedly: Contact Service.Contact Service.
Check sum error of fault memory in EDM (redundant data record 1). If fault occurs repeatedly: Contact Service.Contact Service.
Check sum error of fault memory in EDM (redundant data record 2). If fault occurs repeatedly: Contact Service.Contact Service.
Supply voltage too low (1st limit)Check ECU supply voitage.
Supply voltage too low (2nd limit)Check ECU supply voltage.
Supply voltage too high (1st limit)Check ECU supply voltage.
Supply voltage too high (2nd limit). If engine was stopped: Start engine automatic engine shutdown (— Page 3-03). (depending on project design)Check ECU supply voltage.
Electronic equipment defective; automatic engine shutdownContact Service.
Power supply for pressure sensors defective. If alarm does not disappear: Contact Service.Disconnect connectors X2 and X3 from ECU. Check wiring (pressure sensors). Contact Service.
Internal electronic fault (temperature sensors) Contact Service.Contact Service.
Internal electronic fault; Contact Service.Contact Service.
Engine does not startContact Service.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Available documents

Reference — MTU REACH SVHC 2021-03-17-EN final (MTU)Reference — MTU REACH SVHC 2025-09-19-EN final (MTU)