Error codes Mercedes Atego block MR
MR 0101 — Connection CAN-L to FR is faulty.
MR 0102 - The data of the FR (motion control) control unit is incorrect.
MR 0104 — Incorrect CAN-FR connection.
MR 0149 - CAN parameterization error MR 0204 - Faulty CAN-High-wire to frame SCR module (Euro 4 or Euro 5.
MR 0308 - Crankshaft position sensor, short to ground.
MR 0309 - Crankshaft position sensor, open circuit.
MR 0310 - Crankshaft position sensor: signal too weak
MR 0311 - Crankshaft position sensor: incorrect synchronization of the crankshaft and camshaft signals.
MR 0312 - Crankshaft position sensor: no signal.
MR 0313 - Crankshaft position sensor: wrong polarity.
MR 0408 - Camshaft position sensor, short to ground.
MR 0409 - Camshaft position sensor, open circuit.
MR 0412 - Camshaft position sensor: no signal.
MR 0413 - Camshaft position sensor: wrong polarity.
MR 0530 - Speeding.
MR 0612 - There is no signal "Fan speed.
MR 0631 - Fan speed too low.
MR 0722 - Too high temperature after the catalyst.
MR 0782 Catalyst missing.
MR 0788 - Too high temperature in front of the catalyst (threshold value 1 exceeded).
MR 0789 - Too high temperature in front of the catalyst (threshold value 2 exceeded).
MR 0797 - Too high temperature in front of the catalyst (reduced engine power).
MR 0815 - The temperature sensor in front of the catalyst has an open or short to positive.
MR 0816 - The temperature sensor in front of the catalyst has a short to ground.
MR 0915 - The temperature sensor behind the catalytic converter has an open or short to positive.
MR 0916 - The temperature sensor behind the catalyst has a short to ground.
MR 1015 - The oil temperature sensor is out of measurement range (short to positive, open circuit).
MR 1016 - The oil temperature sensor has not reached the minimum value of the measuring range (short to ground).
MR 1115 - The fuel temperature sensor is out of measurement range (short to positive, open circuit).
MR 1116 - The fuel temperature sensor has not reached the minimum value of the measuring range (short to ground).
MR 1215 - Combined sensor "boost pressure and intake air temperature": temperature sensor, measurement range exceeded (short to positive, open circuit).
MR 1216 - Combined 'boost pressure and intake air temperature' sensor: temperature sensor, minimum measuring range not reached (short to ground).
MR 1315 - Atmospheric pressure sensor, measurement range exceeded (short to positive, open circuit).
MR 1316 - Atmospheric pressure sensor, the minimum value of the measuring range has not been reached (short to ground).
MR 1415 - Combined 'boost pressure and intake air temperature' sensor: pressure sensor, out of measurement range (short to positive, open circuit).
MR 1416 - Combined sensor 'boost pressure and intake air temperature': pressure sensor, the minimum of the measuring range has not been reached (short to ground).
MR 1417 - Combined boost pressure and charge air temperature sensor: pressure sensor, the measured value is unreliable.
MR 1515 - Coolant temperature sensor, measurement range exceeded (short to positive, open circuit).
MR 1516 - Water temperature sensor, the minimum value of the measuring range has not been reached (short to ground).
MR 1615 - Oil pressure sensor, measurement range exceeded (short to positive, open circuit).
MR 1616 - Oil pressure sensor, the minimum value of the measuring range has not been reached (short to ground).
MR 1617 - Oil pressure sensor, the measured value is unreliable.
MR 1715 - Combined input: measurement range exceeded.
MR 1716 - Combined input: the minimum measuring range has not been reached.
MR 1717 - Combined input: invalid signal.
MR 1818 - Faulty discharge circuit.
MR 1820 - Boost pressure exceeded.
MR 1822 - Discharge air temperature exceeded.
MR 1873 - The speed of the turbocharger has a violation of uniform movement.
MR 1874 - Too much deviation of the boost pressure control setpoint.
MR 1876 - Insufficient boost pressure for braking mode.
MR 1878 - Faulty discharge circuit.
MR 1917 - The measured value of the fuel pressure sensor is unreliable.
MR 2017 - The measured value of the oil pressure sensor is unreliable.
MR 2020 - Too low oil pressure.
MR 2021 - Too low oil pressure.
MR 2026 - Engine oil level too high or too low.
MR 2122 - Too high coolant temperature.
MR 2219 - Terminal 15 of the MR or FR control unit has an open circuit.
MR 2319 - Terminal 50 of the MR or FR control unit has an open circuit.
MR 2415 - Fuel differential pressure sensor has an open circuit.
MR 2416 - Fuel differential pressure sensor has a short to ground.
MR 2509 - Oil level sensor: open circuit.
MR 2515 - Oil level sensor, short to positive, measurement range exceeded.
MR 2516 - Oil level sensor, short to ground, minimum measuring range not reached.
MR 2517 - Oil level sensor: the measured value is unreliable.
MR 2612 - The turbocharger speed sensor has an open circuit, a short to ground, a short to positive.
MR 2615 - The turbocharger speed sensor has a short to positive, open circuit.
MR 2616 - The turbocharger speed sensor has a short to ground.
MR 2712 - No generator speed signal (timeout) or turbocharger speed sensor has an open circuit, short to ground, short to positive (turbocharger 2).
MR 2804 NOx sensor communication error.
MR 2815 - The NOx sensor has a short to positive, open circuit.
MR 2816 - The NOx sensor has a short to ground.
MR 2971 - Too high emission of nitrogen oxides (exceeded 1 threshold value).
MR 2972 - Nitrogen oxide emissions too high (threshold value 2 exceeded).
MR 3015 - Fuel pressure sensor, measurement range exceeded (short to positive, open circuit).
MR 3016 - Fuel pressure sensor, the minimum measurement range has not been reached (short to ground).
MR 3115 - Charge air temperature sensor 2 has an open circuit.
MR 3116 - Charge air temperature sensor 2 has a short circuit.
MR 3215 - The temperature sensor of the exhaust gas recirculation system has an open circuit.
MR 3216 - The temperature sensor of the exhaust gas recirculation system has a short circuit.
MR 3332 - Exhaust gas recirculation temperature sensor: value out of range.
MR 3415 - The air humidity sensor has a short to positive, open circuit.
MR 3416 - The air humidity sensor has a short to ground.
MR 3515 - The air temperature sensor has a short to positive, open circuit.
MR 3516 - The air temperature sensor has a short to ground.
MR 3604 – Air temperature CAN message missing'.
MR 3617 - The measured value of the ambient air temperature sensor is unreliable.
MR 3706 - SCR activation air valve has a short to ground.
MR 3707 - SCR compressed air valve has a short to positive.
MR 3709 - SCR compressed air control valve has an open circuit.
MR 3817 - The measured values of the temperature sensors in the catalyst are unreliable.
MR 3906 - The AdBIue pump has a short to ground.
MR 3907 - The AdBIue pump has a short to positive.
MR 3909 - The AdBIue pump has an open circuit.
MR 4024 - Internal error in the control unit.
MR 4034 - Internal error in the control unit.
MR 4035 - Internal error in the control unit.
MR 4036 - Internal error in the control unit.
MR 4037 - Internal error in the control unit.
MR 4038 - Internal error in the control unit.
MR 4039 - Faulty starter control (output stage.
MR 4040 - Internal error in the control unit.
MR 4041 - Internal error in the control unit.
MR 4047 - Internal error in the control unit.
MR 4048 - Internal error in the control unit.
MR 4049 - Incorrect parameterization of proportional valves.
MR 4050 - Internal error in the control unit.
MR 4051 - Internal error in the control unit.
MR 4052 - Internal error in the control unit.
MR 4053 - Internal error in the control unit.
MR 4054 - Internal error in the control unit.
MR 4056 - Internal error in the control unit.
MR 4058 - Data block in the MR engine control unit (PLD.
MR 4092 - Internal error in the control unit.
MR 4149 - Motor brake set incorrectly.
MR 4200 - Proportional valve 5 has a short to positive.
MR 4201 - Proportional valve 5 has a short to ground.
MR 4202 - Proportional valve 7 has a short to ground.
MR 4203 - Proportional valve 7 has an open circuit.
MR 4204 - Proportional valve 7 has a short to positive.
MR 4205 - Throttle position sensor has a short to positive, open circuit.
MR 4206 - Throttle position sensor has a short to ground.
MR 4207 - The temperature sensor in front of the diesel oxidation catalyst has a short to positive, open circuit.
MR 4208 - The temperature sensor in front of the diesel oxidation catalyst has a short to ground.
MR 4209 - The temperature sensor behind the diesel oxidation catalyst has a short to positive, open circuit.
MR 4210 - The temperature sensor behind the diesel oxidation catalyst has a short to ground.
MR 4211 - The differential pressure sensor in front of the particulate filter has a short to positive, open circuit.
MR 4212 - The differential pressure sensor in front of the particulate filter has a short to ground.
MR 4213 - The differential pressure sensor behind the particulate filter has a short to positive, open circuit.
MR 4214 - The differential pressure sensor behind the particulate filter has a short to ground.
MR 4215 - Too high pressure drop in the particulate filter.
MR 4216 - The pressure drop in the particulate filter is too low.
MR 4217 - Too much throttle trim offset.
MR 4218 - Initial throttle setting failed.
MR 4219 - AdBlue dispenser diffuser clogged.
MR 4220 - The dispenser is dirty.
MR 4221 - Diffuser heater circuit open.
MR 4222 - The diffuser heater has a short to ground.
MR 4223 - The heater diffuser has a short to positive.
MR 4224 - Internal error in the control unit.
MR 4225 - Bank 1 proportional valve has a short to positive.
MR 4226 - Bank 1 proportional valve has a short to ground.
MR 4227 - Internal malfunction of the control unit.
MR 4228 - Missing SORT components.
MR 4229 - The measured value of the SORT temperature sensors (pair A) is unreliable.
MR 4230 - The measured value of the SORT temperature sensors (pair B) is unreliable.
MR 4231 - The particulate filter is not installed.
MR 4232 - The measured value of the differential pressure sensor in front of the particulate filter is unreliable.
MR 4233 - The measured value of the differential pressure sensor after the particulate filter is unreliable.
MR 4234 - Emissions of nitrogen oxides are too high for an unknown reason (exceeding the second threshold).
MR 4235 - Excessive emission of nitrogen oxides due to poor quality AdBlue.
MR 4236 - Nitrogen oxide emissions too high due to insufficient AdBlue dosage.
MR 4237 - The measured value of the NOx sensor is unreliable.
MR 4238 - The temperature in the particulate filter is too low.
MR 4239 - Sensor unit 1 in the MR control unit has a short circuit.
MR 4240 - Sensor unit 2 in the MR control unit has a short circuit.
MR 4241 - Sensor unit 1 on the SCR module in the frame has a short circuit.
MR 4242 - Sensor unit 2 on the SCR module in the frame has a short circuit.
MR 4243 - Sensor unit 3 on the SCR module in the frame has a short circuit.
MR 4244 - Malfunction of the NOx sensor.
MR 4245: 'NOx sensor' component defective'.
MR 4246 - Too high initial emission of nitrogen oxides.
MR 4247 - Defective 'catalyst' building block.
MR 4248 - Poor AdBlue quality or insufficient AdBlue dosage.
MR 4249 - Nitrogen oxide emissions too high.
MR 4415 - The differential pressure sensor in front of the particulate filter has a short to positive, open circuit.
MR 4416 - The differential pressure sensor in front of the particulate filter has a short to ground.
MR 4805 - Bank 1 injector has a short to positive.
MR 4806 - The return of the pump-injector in row 1 has a short to ground.
MR 4905 - Bank 2 injector has a short to positive.
MR 4906 - Bank 2 injector return has a short to ground.
MR 5026 - Cylinder 1 injector: valve does not open.
MR 5027 - Cylinder 1 injector: control malfunction.
MR 5028 - Cylinder 1 injector: short circuit.
MR 5126 - Cylinder 2 injector: valve does not open.
MR 5127 - Cylinder 2 injector: control malfunction.
MR 5128 - Cylinder 2 injector: short circuit.
MR 5226 - Cylinder 3 injector: valve does not open.
MR 5227 - Cylinder 3 injector: control malfunction.
MR 5228 - Cylinder 3 injector: short circuit.
MR 5326 - Cylinder 4 injector: valve does not open.
MR 5327 - Cylinder 4 injector: control malfunction.
MR 5328 - Cylinder 4 injector: short circuit.
MR 5426 - Cylinder 5 injector: valve does not open.
MR 5427 - Cylinder 5 injector: control malfunction.
MR 5428 - Cylinder 5 injector: short circuit.
MR 5526 - Cylinder 6 injector: valve does not open.
MR 5527 - Cylinder 6 injector: control malfunction.
MR 5528 - Cylinder 6 injector: short circuit.
MR 5626 - Cylinder 7 injector: valve does not open.
MR 5627 - Cylinder 7 injector: control malfunction.
MR 5628 - Cylinder 7 injector: short circuit.
MR 5726 - Nozzle 8 cylinder: the valve does not open.
MR 5727 - Cylinder 8 injector: control malfunction.
MR 5728 - Cylinder 8 injector: short circuit.
MR 5806 - The AdBlue line heater has a short to ground.
MR 5807 - The AdBlue line heater has a short to positive.
MR 5809 - The AdBlue line heater has an open circuit.
MR 5869 - Faulty AdBlue line heater.
MR 5906 - AdBlue tank heating solenoid has a short to ground.
MR 5907 - AdBlue tank heating solenoid has a short to positive.
MR 5909 - AdBlue heater solenoid valve has an open circuit.
MR 5969 — Faulty valve heats AdBlue tank.
MR 6015 - AdBlue level sensor has a short to positive, open circuit.
MR 6016 - AdBlue level sensor has a short to ground.
MR 6029 - AdBlue tank filling level is too low.
MR 6115 - AdBlue tank temperature sensor has a short to positive, open circuit.
MR 6116 - AdBlue tank temperature sensor has a short to ground.
MR 6169 - Malfunction of the AdBlue tank temperature / filling level sensor.
MR 6293 - Internal malfunction in the SCR module in the frame.
MR 6327 - OBD lamp activation interrupted.
MR 6409 - The heating flange is broken.
MR 6432 - Heated flange failure.
MR 6506 - Oil separator diagnostic cable has a short to ground.
MR 6564 - Oil separator diagnostic cable has an open or short to positive.
MR 6678 - Faulty exhaust gas recirculation valve.
MR 6679 - The temperature difference between the exhaust gases and the coolant is unreliable.
MR 6720 AdBlue pressure too high.
MR 6721 AdBlue pressure too low.
MR 6770 - AdBlue pressure drop when pump is overloaded is too low.
MR 6777 - Too high current consumption of the AdBlue pump.
MR 6820 - SCR compressed air pressure too high.
MR 6821 - SCR compressed air pressure too low.
MR 6883 - The air supply to the SCR compressed air system is broken.
MR 6949 - Parameterization error.
MR 6994 - The exhaust gas aftertreatment system is disabled, and the diagnostic program is active.
MR 6995 - The exhaust gas aftertreatment system is disabled, and the diagnostic program is active.
MR 7006 - Proportional valve 1 has a short to ground.
MR 7007 - Proportional valve 1 has a short to positive.
MR 7009 - Proportional valve 1 has an open circuit.
MR 7106 - Solenoid valve 3: fan stage 1 has a short to ground.
MR 7107 - Proportional valve 3 has a short to positive.
MR 7109 - Solenoid valve 3: 1st stage fan has an open circuit.
MR 7112 - Solenoid valve 3: fan overload - no fan speed.
MR 7206 - Solenoid valve 4: fan stage 2 has a short to ground.
MR 7207 - Proportional valve 4 has a short to positive.
MR 7209 - Solenoid valve 4: 2st stage fan has an open circuit.
MR 7305 - Solenoid valve 2: decompression valve brake shorted to positive.
MR 7306 Solenoid valve 2: decompression valve brake shorted to ground.
MR 7307 - Proportional valve 2 has a short to positive.
MR 7309 - Proportional valve 2 has an open circuit.
MR 7317 - Solenoid valve 2: decompression valve brake has an open circuit or short to ground.
MR 7405 - Proportional valve 5 has a short to positive.
MR 7408 - Proportional valve 5 has a short to ground.
MR 7542 - High battery voltage.
MR 7543 - Low battery voltage.
MR 7606 - Proportional valve 6 has a short to ground.
MR 7609 - Proportional valve 6 has an open circuit.
MR 7705 - Bank 1 proportional valve has a short to positive.
MR 7708 - Bank 1 proportional valve has a short to ground.
MR 7805 - Bank 2 proportional valve has a short to positive.
MR 7808 - Bank 2 proportional valve has a short to ground.
MR 7905 - Proportional valve of the row of the SCR module in the frame is shorted to positive
MR 7908 - The proportional valve of the SCR module row in the frame has a short to ground.
MR 8005 - Terminal 50 to primary relay (short to positive).
MR 8008 - Terminal 50 of the main relay (short to ground).
MR 8009 - Terminal 50 to primary relay (open circuit).
MR 8033 - Faulty control relay.
MR 8039 - Faulty starter control (output stage.
MR 8086 - No loading fix.
MR 8106 - SCR compressed air shut-off valve has a short to ground.
MR 8107 - SCR compressed air shut-off valve has a short to positive.
MR 8109 - SCR compressed air shut-off valve has an open circuit.
MR 8206 - The AdBlue metering valve has a short to ground.
MR 8207 - The AdBlue metering valve has a short to positive.
MR 8209 - The AdBlue metering valve has an open circuit.
MR 8315 - AdBlue temperature sensor has a short to positive, open circuit.
MR 8316 - AdBlue temperature sensor has a short to ground.
MR 8415 - AdBlue pressure sensor has a short to positive, open circuit.
MR 8416 - AdBlue pressure sensor has a short to ground.
MR 8417 - The measured value of the AdBlue pressure sensor is unreliable.
MR 8515 - SCR compressed air sensor has a short to positive, open circuit.
MR 8516 - SCR compressed air sensor has a short to ground.
MR 8517 - The measured value of the compressed air pressure sensor SCR is unreliable.
MR 8690 - Current AdBlue consumption is too high.
MR 8691 - Current AdBlue consumption is too low.
MR 8790 - Average AdBlue consumption is too high.
MR 8791 - Average AdBlue consumption is too low.
MR 8896 - AdBlue pressure is unreliable.
MR 8906 - SCR compressed air shut-off valve has a short to ground.
MR 8907 - SCR compressed air shut-off valve has a short to positive.
MR 8909 - SCR compressed air shut-off valve has an open circuit.
MR 9044 - Cylinder 1 injector: Adjustment of idling uniformity in the restriction zone.
MR 9045 - Cylinder 1 injector: correction for individual cylinders in the restriction zone.
MR 9144 - Nozzle 2 cylinders: adjustment of idle speed uniformity in the restriction zone.
MR 9145 - Cylinder 2 injector: correction for individual cylinders in the restriction zone.
MR 9244 - Nozzle 3 cylinders: adjustment of idle speed uniformity in the restriction zone.
MR 9245 - Cylinder 3 injector: correction for individual cylinders in the restriction zone.
MR 9344 - Nozzle 4 cylinders: adjustment of idle speed uniformity in the restriction zone.
MR 9345 - Cylinder 4 injector: correction for individual cylinders in the restriction zone.
MR 9444 - Cylinder 5 injector: adjustment of idle speed uniformity in the restriction zone
MR 9445 - Cylinder 5 injector: correction for individual cylinders in the restriction zone
MR 9544 - Cylinder 6 injector: adjustment of idle speed uniformity in the restriction zone
MR 9545 - Cylinder 6 injector: correction for individual cylinders in the restriction zone
MR 9645 - Nozzle cylinder 7; correction for individual cylinders in the restricted area.
MR 9744 - Nozzle 8 cylinders: adjustment of idle speed uniformity in the restriction zone.
MR 9745 - Nozzle cylinder 8; correction for individual cylinders in the restricted area.
MR 9846 - Individual cylinder correction error.
MR 9960 - Too many keys.
MR 9961 - The immobilizer protection function is activated, the MR control unit is locked.
MR 9962 - The protective function of the immobilizer in the MR unit is activated.
MR 9963 - There is no transponder code on the engine CAN data bus.
MR 9964 - There is no transponder code on terminal 50.
MR 9965 - Wrong transponder key.
