Error codes Mercedes Atego MR unit (Control engine)

Electronic Control Unit is also known as engine brain. The engine brain is a unit with a microprocessor that controls all the electronics on the vehicle and the sensors on the vehicle. Control unit; It is used in vehicle groups such as passenger cars, light commercial vehicles, heavy vehicles, tractors, work machines. Since the inside of the brain is equipped with a complex electronic integrated system, a malfunction in the brain is a difficult task. is work.

ERROR CODES EXPLANATION
MR 0101 CAN-L connection to FR is faulty
MR 0102 Data from the FR con/trol unit (/traffic con/trol) is wrong
MR 0104 CAN connection to FR is faulty
MR 0149 CAN parameterization error
MR 0204 CAN-High-wire to SCR- frame module (Euro 4 or Euro 5) is defective.
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 crankshaft and camshaft signals.
MR 0312 Crankshaft position sensor: no signal
MR 0313 Crankshaft position sensor: wrong polarity.
MR 0408 Camshaft position sensor, short circuit to ground
MR 0409 Camshaft position sensor, open circuit
MR 0412 Camshaft position sensor: no signal
MR 0413 Camshaft position sensor: reverse polarity
MR 0530 Overspeed
MR 0612 Signal ‘frequency fan rotation’ is missing.
MR 0631 The fan speed is too low.
MR 0722 The temperature after the catalyst is too high.
MR 0782 Catalyst missing.
MR 0788 The temperature in front of the catalyst is too high (threshold value 1 exceeded).
MR 0789 The temperature in front of the catalyst is too high (threshold value 2 exceeded).
MR 0797 The temperature in front of the catalyst is too high (reduced engine power).
MR 0815 The temperature sensor in front of the catalyst has an open circuit or a 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 catalyst has an open circuit or a short to positive.
MR 0916 The temperature sensor behind the catalyst has a short to ground.
MR 1015 The oil temperature sensor has exceeded the 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 has exceeded the 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 charge air temperature’: temperature sensor, measuring range exceeded (short to positive, open circuit)
MR 1216 Combined sensor ‘boost pressure and charge air temperature’: temperature sensor, minimum range not reached measurements (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 sensor ‘boost pressure and charge air temperature’: pressure sensor, measuring range exceeded (short to positive, open circuit)
MR 1416 Combined sensor ‘boost pressure and charge air temperature’: pressure sensor, minimum range not reached measurement (short circuit to ground)
MR 1417 Combined sensor ‘boost pressure and charge air temperature’: pressure sensor, measured value implausible MR 1515
MR 1516 Coolant 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, measured value implausible
MR 1715 Combined input: measuring range exceeded
MR 1716 Combined input: minimum measuring range not reached
MR 1717 Combined input: implausible signal
MR 1818 Discharge circuit defective
MR 1820 Boost pressure exceeded
MR 1822 The charge air temperature is exceeded
MR 1873 The speed of the turbocharger has a violation of uniform movement.
MR 1874 The deviation of the set value of the charge air pressure con/trol is too large.
MR 1876 Boost pressure for braking mode is not enough.
MR 1878 The discharge circuit is faulty
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 Oil pressure is too low.
MR 2021 Oil pressure is too low.
MR 2026 The engine oil level is too high or too low.
MR 2122 The coolant temperature is too high.
MR 2219 Terminal 15 of the MR or FR con/trol unit has an open circuit.
MR 2319 Terminal 50 of the MR or FR con/trol unit has an open circuit.
MR 2415 The differential fuel pressure sensor has an open circuit.
MR 2416 The differential fuel pressure sensor has a short to positive, ground.
MR 2509 Oil level sensor: open circuit
MR 2515 Oil level sensor, short circuit to positive, measuring range exceeded
MR 2516 Oil level sensor, short circuit to ground, minimum measuring range not reached
MR 2517 Oil level sensor: measured value 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, an open circuit.
MR 2616 The turbocharger speed sensor has a short to ground.
MR 2712 There is no speed signal from the generator (timeout). Or The turbocharger speed sensor has an open circuit, a short to ground, a short to positive (turbocharger 2).
MR 2804 The NOx sensor has a communication failure.
MR 2815 The NOx sensor has a short to positive, an open circuit.
MR 2816 The NOx sensor has a short to ground.
MR 2971 Too high emission of ni/trogen oxides (1 threshold value exceeded)
MR 2972​ ​Too high emission of ni/trogen oxides (2 threshold value exceeded)
MR 3015 Fuel pressure sensor, measuring range exceeded (short circuit to positive, open circuit)
MR 3016 Fuel pressure sensor, the minimum of the measuring range has not been reached (short circuit 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, an open circuit.
MR 3416 The air humidity sensor has a short to ground.
MR 3515 The air temperature sensor has a short to positive, an open circuit.
MR 3516 The air temperature sensor has a short to ground.
MR 3604 Missing CAN message ‘Air temperature’.
MR 3617 The measured value of the ambient temperature sensor is unreliable.
MR 3706 The SCR compressed air valve has a short to ground.
MR 3707 The SCR compressed air valve has a short to positive.
MR 3709 The SCR compressed air valve has an open circuit.
MR 3817 The measured values ​​of the temperature sensors on the catalyst are unreliable.
MR 3906 The AdBlue pump has a short to ground.
MR 3907 The AdBlue pump has a short to positive.
MR 3909 The AdBlue pump has an open circuit.
MR 4024 Internal error in the con/trol unit
MR 4034 Internal error in the con/trol unit
MR 4035 Internal error in the con/trol unit
MR 4036 Internal error in the con/trol unit
MR 4037 Internal error in the con/trol unit
MR 4038 Internal error in the con/trol unit
MR 4039 Starter con/trol (output stage) faulty
MR 4040 Internal error in the con/trol unit
MR 4041 Internal error in the con/trol unit
MR 4047 Internal error in the con/trol unit
MR 4048 Internal error in the con/trol unit
MR 4049 Invalid parameterization of proportional valves
MR 4050 Internal error in the con/trol unit
MR 4051 Internal error in the con/trol unit
MR 4052 Internal error in the con/trol unit
MR 4053 Internal error in the con/trol unit
MR 4054 Internal error in the con/trol unit
MR 4056 Internal error in the con/trol unit
MR 4058 Data block in the con/trol unit MR engine regulation (PLD) ) were changed.
MR 4092 Internal error in the con/trol unit
MR 4149 Motor brake parameterized 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 The throttle position sensor has a short to positive, an 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, an 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, an open circuit.
MR 4210 The temperature sensor behind the diesel oxidation catalyst has a short to ground.
MR 4211 The pressure difference sensor in front of the particulate filter has a short to positive, an open circuit.
MR 4212 The pressure difference sensor in front of the particulate filter has a short to ground.
MR 4213 The pressure difference sensor behind the particulate filter has a short to positive, an open circuit.
MR 4214 The pressure difference sensor behind the particulate filter has a short to ground.
MR 4215 The differential pressure in the particulate filter is too high.
MR 4216 The differential pressure in the particulate filter is too low.
MR 4217 Throttle adjustment deviation is too large.
MR 4218 Initial throttle setting failed.
MR 4219 The diffuser in the AdBlue dispenser is clogged.
MR 4220 Dispenser dirty
MR 4221 Diffuser heating has an open circuit.
MR 4222 Diffuser heating has a short to ground.
MR 4223 Diffuser heating has a short to positive.
MR 4224 Internal error in the con/trol 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 con/trol 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 Too high emission of ni/trogen oxides due to an unknown cause (2 threshold value exceeded)
MR 4235 Ni/trogen oxide emissions too high due to poor AdBlue quality
MR 4236 Ni/trogen oxide emissions too high due to insufficient AdBlue dosing
MR 4237 The measured value of the NOx sensor is implausible.
MR 4238 The temperature in the particulate filter is too low.
MR 4239 Sensor unit 1 in the MR con/trol unit has a short circuit.
MR 4240 Sensor unit 2 in the MR con/trol unit has a short circuit.
MR 4241 Sensor block 1 in the SCR module on the frame has a short circuit.
MR 4242 Sensor block 2 in the SCR module on the frame has a short circuit.
MR 4243 Sensor block 3 in the SCR module on the frame has a short circuit.
MR 4244 Malfunction of the NOx sensor
MR 4245 The ‘NOx Sensor’ component is faulty.
MR 4246 Too high initial emission of ni/trogen oxides
MR 4247 Defective ‘catalyst’ assembly.
MR 4248 Low quality AdBlue or insufficient dosing of AdBlue
MR 4249 Too high emission of ni/trogen oxides
MR 4415 The pressure difference sensor in front of the particulate filter has a short to positive, an 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 unit injectors of row 1 has a short to ground.
MR 4905 Bank 2 injector has a short to positive.
MR 4906 The return of the unit injectors of row 2 has a short to ground.
MR 5026 Cylinder 1 injector: valve does not open
MR 5027 Cylinder 1 injector: con/trol failure
MR 5028 Cylinder 1 injector: short circuit
MR 5126 Cylinder 2 injector: valve does not open
MR 5127 cylinder 2 injector: con/trol failure
MR 5128 cylinder 2 unit injector: short circuit
MR 5226 cylinder 3 unit injector: valve does not open
MR 5227 cylinder 3 unit injector: con/trol failure
MR 5228 cylinder 3 unit injector: short circuit
MR 5326 Cylinder 4 injector: valve does not open
MR 5327 Cylinder 4 injector: con/trol failure
MR 5328 Cylinder 4 injector: short circuit
MR 5426 Cylinder 5 injector: valve does not open
MR 5427 Cylinder 5 injector: con/trol malfunction
MR 5428 cylinder 5 injector: short circuit
MR 5526 Cylinder 6 unit injector: valve does not open
MR 5527 Cylinder 6 unit injector: con/trol failure
MR 5528 Cylinder 6 unit injector: short circuit
MR 5626 Cylinder 7 unit injector: valve does not open
MR 5627 Cylinder 7 injector: con/trol failure
MR 5628 Cylinder 7 injector: short circuit
MR 5726 Cylinder 8 injector: valve does not open
MR 5727 Cylinder 8 injector: con/trol fault
MR 5728 Cylinder 8 injector: short circuit
MR 5806 AdBlue line heater has a short to ground.
MR 5807 AdBlue pipeline heating has a short to positive.
MR 5809 The heating of the AdBlue pipeline has an open circuit.
MR 5869 The heating of the AdBlue pipeline is faulty.
MR 5906 The AdBlue tank heating solenoid valve has a short to ground.
MR 5907 The AdBlue tank heating solenoid valve has a short to positive.
MR 5909 The AdBlue heating solenoid valve has an open circuit.
MR 5969 The AdBlue tank heating valve is defective.
MR 6015 The AdBlue level sensor has a short to positive, an open circuit.
MR 6016 AdBlue level sensor has a short to ground.
MR 6029 The filling level of the AdBlue tank 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 Sensor ‘Fill level / temperature of the AdBlue tank’ is defective.
MR 6293 Internal malfunction in the SCR module on the frame
MR 6327 OBD lamp activation is broken.
MR 6409 The heating flange has an open circuit.
MR 6432 Heated flange failure
MR 6506 The oil separator diagnostic wire has a short to ground.
MR 6564 The oil separator diagnostic wire has an open circuit or a short to positive.
MR 6678 The exhaust gas recirculation valve is defective.
MR 6679 The temperature difference between the exhaust gases and the coolant is unreliable.
MR 6720 AdBlue pressure is too high.
MR 6721 AdBlue pressure is too low.
MR 6770 AdBlue pressure drop during pump overrun is too low.
MR 6777 The current consumption of the AdBlue pump is too high.
MR 6820 SCR compressed air pressure too high.
MR 6821 SCR compressed air pressure is too low.
MR 6883 The air supply of the SCR compressed air system is broken.
MR 6949 Parameterization error
MR 6994 The exhaust gas after/treatment system is disabled and the diagnostic program is active
MR 6995 The exhaust gas after/treatment system is disabled and the diagnostic program is active
MR 7006 Proportional valve 1 has a short circuit 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: fan stage 1 has an open circuit.
MR 7112 Solenoid valve 3: fan overdrive
MR 7207 Proportional valve 4 has a short to positive.
MR 7209 Solenoid valve 4: fan stage 2 has an open circuit.
MR 7305 Solenoid valve 2: decompression valve brake has a short to positive.
MR 7306 Solenoid valve 2: decompression valve brake has a short 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 The proportional valve of the SCR module row on the frame has a short to positive.
MR 7908 The proportional valve of the row of the SCR module on the frame has a short to ground.
MR 8005 Terminal 50 to primary relay (short to positive)
MR 8008 Terminal 50 to primary relay (short to ground)
MR 8009 Terminal 50 to primary relay (open circuit)
MR 8033 Faulty con/trol relay
MR 8039 Con/trol starter (output stage) faulty
MR 8086 Starter not engaged
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 The AdBlue temperature sensor has a short to positive, an open circuit.
MR 8316 AdBlue temperature sensor has a short to ground.
MR 8415 The AdBlue pressure sensor has a short to positive, an 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 The SCR compressed air sensor has a short to positive, an 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 The current consumption of AdBlue 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 The SCR compressed air shut-off valve has an open circuit.
MR 9044 Cylinder 1 Injector: idle speed adjustment in the limit area
MR 9045 Cylinder injector 1: Cylinder injector correction in the limit area
MR 9144 Cylinder 2 Injector: idle speed adjustment in the limit area
MR 9145 Cylinder 2 injector: cylinder-by-cylinder correction in the limitation zone
MR 9244 Cylinder-injector 3: idle speed adjustment in the limitation area
MR 9245 Cylinder-injector 3: cylinder-by-cylinder correction in the limitation zone
MR 9344 Cylinder 4 injector: idle speed adjustment in the res/tricted area
MR 9345 Cylinder injector 4: cylinder-by-cylinder correction in the res/tricted area
MR 9444 Cylinder 5 injector: idle speed adjustment in the res/tricted area
MR 9445 Cylinder 5 injector: cylinder-by-cylinder correction in the res/triction zone
MR 9544 Cylinder-injector unit 6: idle speed adjustment in the res/triction zone MR 9545
MR 9645 nozzle of cylinder 7; correction for individual cylinders in the res/tricted area
MR 9744 Cylinder 8 injector: adjustment of idle speed uniformity in the limit area
MR 9745 Cylinder 8 injector; correction for individual cylinders in the res/triction zone
MR 9846 Correction for individual cylinders failed
MR 9960 Too many keys
MR 9961 Immobilizer protection function activated, MR con/trol unit blocked
MR 9962 Immobilizer protection function activated in the MR unit MR
MR 9963 On CAN data bus /transponder code missing
MR 9964 /Transponder code missing at terminal 50
MR 9965 Incorrect /transponder key