Fault code list for engine control (MR) control unit · ad0019n9019eb · Mercedes-Benz WIS

AD00.19-N-9019EB

Fault code list for engine control (MR) control unit

11.1.08

MODEL 374.5 /6, 375.3 /4, 940, 942, 943, 944

MODEL 950.5 /6, 952.5 /6, 953.6, 954.5 with BODY 940.890

MODEL 958.2 /4

Fault code	Fault code description
4805	A unit pump of bank 1 has Short circuit to positive.
4806	The return of the unit pumps of bank 1 has Short circuit to ground.
4905	A unit pump of bank 2 has Short circuit to positive.
4906	The return of the unit pumps of bank 2 has Short circuit to ground.
5026	Unit pump for cylinder 1: valve no impact
5027	Unit pump for cylinder 1: Actuation fault
5028	Unit pump for cylinder 1: short circuit
5126	Unit pump for cylinder 2: valve no impact
5127	Unit pump for cylinder 2: Actuation fault
5128	Unit pump for cylinder 2: short circuit
5226	Unit pump for cylinder 3: valve no impact
5227	Unit pump for cylinder 3: Actuation fault
5228	Unit pump for cylinder 3: short circuit
5326	Unit pump for cylinder 4: valve no impact
5327	Unit pump for cylinder 4: Actuation fault
5328	Unit pump for cylinder 4: short circuit
5426	Unit pump for cylinder 5: valve no impact
5427	Unit pump for cylinder 5: Actuation fault
5428	Unit pump for cylinder 5: short circuit
5526	Unit pump for cylinder 6: valve no impact
5527	Unit pump for cylinder 6: Actuation fault
5528	Unit pump for cylinder 6: short circuit
5626	Unit pump for cylinder 7: valve no impact
5627	Unit pump for cylinder 7: Actuation fault
5628	Unit pump for cylinder 7: short circuit
5726	Unit pump for cylinder 8: valve no impact
5727	Unit pump for cylinder 8: Actuation fault
5728	Unit pump for cylinder 8: short circuit
5806	AdBlue line heater has Short circuit to ground.
5807	AdBlue line heater has Short circuit to positive.
5809	AdBlue line heater has Open circuit.
5869	AdBlue line heater is defective.
5906	Solenoid valve of AdBlue tank heater has Short circuit to ground.
5907	Solenoid valve of AdBlue tank heater has Short circuit to positive.
5909	Solenoid valve of AdBlue tank heater has Open circuit.
5969	Heat valve of AdBlue tank is defective.
6015	Fill level sensor of AdBlue tank has Short circuit to positive,Open circuit.
6016	Fill level sensor of AdBlue tank has Short circuit to ground.
6029	Fill level of AdBlue tank is too low.
6115	Temperature sensor of AdBlue tanks has Short circuit to positive,Open circuit.
6116	Temperature sensor of AdBlue tanks has Short circuit to ground.
6169	Sensor 'Fill level/temperature of AdBlue tank' is defective.
6293	Internal error in the SCR frame module
6327	Actuation of OBD lamp is faulty.
6409	The heater flange has Open circuit.
6432	Fault at heater flange
6506	The diagnostic cable of the oil separator has Short circuit to ground.
6564	The diagnostic cable of the oil separator has Open circuit or Short circuit to positive.
6678	The EGR valve is faulty.
6679	Temperature difference between exhaust gas and coolant is implausible.
6720	AdBlue pressure is too high.
6721	AdBlue pressure is too low.
6770	AdBlue pressure drop is too low during run-on.
6777	Power consumption of AdBlue pump is too high.
6820	SCR air pressure is too high.
6821	SCR air pressure is too low.
6883	The air supply of the SCR compressed air system is faulty.
6949	Parameterizing error
6994	Exhaust gas aftertreatment switched off and diagnosis routine active
6995	Exhaust gas aftertreatment switched off and diagnosis routine active
7006	Solenoid valve 1: turbocharger adjustment (Short circuit to ground)
7007	Proportioning valve 1 has Short circuit to positive.
7009	Solenoid valve 1: turbocharger adjustment (Open circuit)
7106	Proportioning valve 3 has Short circuit to ground.
7107	Proportioning valve 3 has Short circuit to positive.
7109	Proportioning valve 3 has Open circuit.
7112	Solenoid valve 3: fan drive, no fan speed
7206	Proportioning valve 4 has Short circuit to ground.
7207	Proportioning valve 4 has Short circuit to positive.
7209	Proportioning valve 4 has Open circuit.
7305	Solenoid valve 2: decompression valve brake has Short circuit to positive.
7306	Solenoid valve 2: decompression valve brake has Short circuit to ground.
7307	Proportioning valve 2 has Short circuit to positive.
7309	Proportioning valve 2 has Open circuit.
7317	Solenoid valve 2: decompression valve brake has Open circuit or Short circuit to ground.
7405	Proportioning valve 5 has Short circuit to positive.
7408	Proportioning valve 5 has Short circuit to ground.
7542	Battery voltage too high
7543	Battery voltage too low
7606	Proportioning valve 6 has Short circuit to ground.
7609	Proportioning valve 6 has Open circuit.
7705	The proportioning valve bank 1 has Short circuit to positive.
7708	The proportioning valve bank 1 has Short circuit to ground.
7805	The proportioning valve bank 2 has Short circuit to positive.
7808	The proportioning valve bank 2 has Short circuit to ground.
7905	Proportioning valve bank 'SCR frame module' has Short circuit to positive.
7908	Proportioning valve bank 'SCR frame module' has Short circuit to ground.
8005	Terminal 50 on series relay(Short circuit to positive)
8008	Terminal 50 on series relay(Short circuit to ground)
8009	Terminal 50 on series relay(Open circuit)
8033	Series relay defective
8039	Starter actuation (output stage) faulty
8086	Starter does not engage
8106	SCR compressed air shutoff valve has Short circuit to ground.
8107	SCR compressed air shutoff valve has Short circuit to positive.
8109	SCR compressed air shutoff valve has Open circuit.
8206	AdBlue metering valve has Short circuit to ground.
8207	AdBlue metering valve has Short circuit to positive.
8209	AdBlue metering valve has Open circuit.
8315	AdBlue temperature sensor has Short circuit to positive,Open circuit.
8316	AdBlue temperature sensor has Short circuit to ground.
8415	AdBlue pressure sensor has Short circuit to positive,Open circuit.
8416	AdBlue pressure sensor has Short circuit to ground.
8417	Measured value of AdBlue pressure sensor is implausible.
8515	SCR compressed air sensor has Short circuit to positive,Open circuit.
8516	SCR compressed air sensor has Short circuit to ground.
8517	Measured value of SCR compressed air sensor is implausible.
8690	Current AdBlue consumption is too high.
8691	Current AdBlue consumption is too low.
8790	Average AdBlue consumption is too high.
8791	Average AdBlue consumption is too low.
8896	AdBlue pressure is implausible.
8906	SCR compressed air shutoff valve has Short circuit to ground.
8907	SCR compressed air shutoff valve has Short circuit to positive.
8909	SCR compressed air shutoff valve has Open circuit.
9044	Unit pump cylinder 1: smooth idle control within limit
9045	Unit pump cylinder 1: single cylinder adjustment within limit
9144	Unit pump cylinder 2: smooth idle control within limit
9145	Unit pump cylinder 2: single cylinder adjustment within limit
9244	Unit pump cylinder 3: smooth idle control within limit
9245	Unit pump cylinder 3: single cylinder adjustment within limit
9344	Unit pump cylinder 4: smooth idle control within limit
9345	Unit pump cylinder 4: single cylinder adjustment within limit
9444	Unit pump cylinder 5: smooth idle control within limit
9445	Unit pump cylinder 5: single cylinder adjustment within limit
9544	Unit pump cylinder 6: smooth idle control within limit
9545	Unit pump cylinder 6: single cylinder adjustment within limit
9644	Unit pump cylinder 7: smooth idle control within limit
9645	Unit pump cylinder 7: single cylinder adjustment within limit
9744	Unit pump cylinder 8: smooth idle control within limit
9745	Unit pump cylinder 8: single cylinder adjustment within limit
9846	Single cylinder comparison aborted
9960	Too many keys
9961	Immobilizer guard function active, control unit MR engine control blocked
9962	Immobilizer in MR engine control activated
9963	No transponder code through engine CAN bus
9964	No transponder code through terminal 50
9965	Incorrect transponder key