Mercedes Truck List of fault codes, automatic transmission control unit (AGN)

TYPE 375.1 with a body 375.850

TYPE 970, 972, 974, 975, 976 with the body 972.890

TYPE 958.0

0001 CAN bus IES: disconnection

0010 CAN communication with the Key Block design node has been violated.

0100 CAN communication with the MR control unit is broken.

0103 CAN communication with the Key Block design node has been violated.

0115 CAN communication with the MR control unit is broken.

0122 Pedal Stroke Sensor: Undervoltage

0123 Pedal switch: voltage is too high.

0218 Maximum permissible gearbox oil temperature exceeded.

0291 CAN communication with the Key Block design node is broken. (2)

0304 Keyboard not compatible.

0333 Key block incompatible. (2)

0404 The AGN control unit receives invalid values from the key block.

0592 The AGN control unit receives invalid values from the key block. (2)

0602 The control unit is not calibrated or is not calibrated correctly.

0610 Programming of the control unit does not correspond to the equipment of the car.

0613 The processor is malfunctioning or does not respond.

0614 Data reliability error to reduce torque transmitted between AGN and MR control units

0634 The temperature of the AGN control unit is too high.

063E The gas pedal was not recognized.

063F The coolant temperature sensor was not recognized.

0658 The power supply to the solenoid valves (group HSD1) is too low.

0659 The power supply to the solenoid valves (group HSD1) is too high.

0701 The limit value of the gearbox oil temperature has been exceeded.

0702 Invalid KP number

0703 The circuit of the brake switch is defective.

0708 Error in the internal transfer switch (IMS) - invalid response signal

070C The oil level sensor has a short to ground.

070D The oil level sensor has a short circuit to positive.

0711 Transmission oil temperature sensor signal invalid.

0712 The signal wire of the oil temperature sensor has a short to ground.

0713 The signal wire of the oil temperature sensor has a short circuit to positive or open circuit.

0716 Turbine speed sensor signal unreliable.

0717 Turbine speed sensor does not give a signal or gives an invalid signal.

071A No torque limit signal.

071D Transmission Lock signal is invalid.

0721 The signal from the output speed sensor is not reliable.

0722 The output speed sensor is not generating a signal or is generating an invalid signal.

0726 The engine speed sensor signal is not reliable.

0727 The engine speed sensor does not give a signal or gives an invalid signal.

0729 The gear ratio in 6th gear is incorrect.

0731 The gear ratio in 1st gear is incorrect.

0732 The gear ratio in 2nd gear is incorrect.

0733 The gear ratio in 3rd gear is incorrect.

0734 The gear ratio in 4th gear is incorrect.

0735 The gear ratio in 5th gear is incorrect.

0736 The gear ratio in reverse gear is incorrect.

0741 Acceleration: Unprofitable slip converter clutch slip speed

0776 The clutch activated by the pressure control valve PCS2 does not engage.

0777 The clutch activated by the pressure control valve PCS2 does not turn off.

0796 The clutch activated by the PCS3 pressure control valve does not engage.

0797 The clutch activated by the PCS3 pressure control valve does not turn off.

0842 Pressure sensor PS1 has a short to ground or is faulty.

0843 The pressure sensor PS1 is short to positive or faulty.

0880 Invalid power supply to the control unit. Terminal 15

0881 Invalid power supply to the control unit. Terminal 30

0882 The power supply to the control unit is too low (undervoltage). Terminal 30

0883 The power supply to the control unit is too high (overvoltage). Terminal 30

0894 KP stalled.

0960 The MAIN MOD pressure control valve has an open circuit.

0962 MAIN MOD pressure control valve has a short to ground.

0963 MAIN MOD pressure control valve has a short to positive.

0964 PCS2 pressure control valve: open circuit in electric chains.

0966 PCS2 pressure control valve: short to ground.

0967 PCS2 pressure control valve: short to positive.

0968 Regulator / pressure regulator PCS3: open circuit in electric chains.

0970 PCS3 pressure control valve: short to ground.

0971 PCS3 pressure control valve: short to positive.

0973 Solenoid valve SS1: short to ground.

0974 Solenoid valve SS1: short to positive.

0975 Solenoid valve SS2: open circuit in electric chains.

0976 Solenoid valve SS2: short to ground.

0977 Solenoid valve SS2: short to positive.

0989 The brake pressure sensor has a short to ground, an open circuit.

0990 The brake pressure sensor has a short to positive.

1312 Brake retarder signal voltage is too low.

1313 The signal voltage of the retarder (retarder) is too high.

1739 Invalid gear ratio

1891 PWM signal 'Gas pedal sensor position' too small.

1892 PWM signal 'Gas pedal sensor position' too large.

2184 Coolant temperature sensor has a short to ground.

2185 Coolant temperature sensor has an open circuit or short to positive.

2637 Malfunction of the torque control system when changing gears

2641 Torque Limit Malfunction

2670 Power supply to solenoid valves (HSD2 group) is too low.

2671 Power supply to solenoid valves (HSD2 group) is too high.

2685 Power supply to solenoid valves (HDS3 group) is too low.

2686 Power supply to solenoid valves (HDS3 group) is too high.

2714 The clutch activated by the PCS4 pressure control valve does not engage.

2715 Clutch activated by pressure control valve PCS4 does not turn off.

2718 Pressure regulating valve PCS4: open in electric. chains.

2720 PCS4 pressure control valve: short to ground.

2721 Pressure regulating valve PCS4: short to positive.

2723 Clutch activated by pressure control valve PCS1 does not engage.

2724 Clutch activated by pressure control valve PCS1 does not turn off.

2727 Pressure regulating valve PCS1: open circuit in electric chains.

2729 Pressure control valve PCS1: short to ground.

2730 Pressure regulating valve PCS1: short to positive.

2736 Pressure regulating valve PCS5: open in electric. chains.

2738 Pressure regulating valve PCS5: short to ground.

2739 Pressure regulating valve PCS5: short to positive.

2740 The maximum permissible oil temperature in the retarder has been exceeded.

2742 The oil temperature sensor of the retarder has an open circuit, a short to ground.

2743 The oil temperature sensor of the retarder has a short to positive.

2761 Pressure regulating valve ТСС: open circuit in electric chains.

2762 Pressure control valve defective.

2763 TCC pressure control valve: short to positive.

2764 TCC pressure control valve: short to ground.

278A Kickdown switch defective.

2793 The signal of the gear select switch is incorrect.

2808 Clutch activated by the PCS6 pressure control valve does not engage.

2809 Clutch activated by the PCS6 pressure control valve does not turn off.

2812 PCS6 pressure control valve: open circuit in electric chains.

2814 PCS6 pressure control valve: short to ground.

2815 PCS6 pressure control valve: short to positive.

A1313 Control unit power supply voltage is too low (undervoltage).

A1323 Supply voltage of the control unit is too high (overvoltage).

A1412 The oil level sensor (373) has an open circuit, a short to ground.

A1423 The oil level sensor (373) has a short to positive.

A2112 The gas pedal sensor B1 has an open circuit, a short to ground.

A2123 The gas pedal sensor B1 has a short to positive.

A2214 The signal from the engine speed sensor is not reliable.

A2215 The signal of the turbine speed sensor is unreliable.

A2216 The signal of the output speed sensor is unreliable.

A2312 The automatic gearbox selector lever (391) has an open circuit, a short to ground, a short to positive.

A2313 The MODE mode switch of the selector lever of the automatic gearbox (391) has an open circuit, a short to ground, a short to positive.

A2314 The selector lever of the automatic gearbox (391) has an open circuit, a short to ground, a short to positive.

A2315 The MODE mode switch of the selector lever of the automatic gearbox (391) has an open circuit, a short to ground, a short to positive.

A2316 The wire to the display of the selector lever of the automatic gearbox has an open circuit, a short to ground, a short to positive.

A2412 The oil temperature sensor KP (372) has an open circuit, a short to ground, a short to positive.

A2423 The gearbox oil temperature sensor (372) has an open circuit, a short to ground, and a short to positive.

A2500 The output speed sensor detects an invalid speed on gear L.

A2511 The output speed sensor detects an invalid speed in 1st gear.

A2522 The output speed sensor detects an invalid speed in 2nd gear.

A2533 The output speed sensor detects an invalid speed in 3rd gear.

A2544 The output speed sensor detects an invalid speed in 4th gear.

A2555 The output speed sensor detects an invalid speed in 5th gear.

A2566 The output speed sensor detects an invalid speed in 6th gear.

A2577 The output speed sensor detects an invalid speed on gear R.

A2600 The AGN control unit does not receive a signal from the gas pedal sensor B1.

A2611 The A49 control unit does not receive a coolant temperature signal from the B85 sensor.

A3200 The pressure sensor SZ (365) has an open circuit on gear L, a short circuit to ground, a short circuit to plus

A3233 The pressure sensor SZ (365) has on the transmission 3 a circuit break, a short to ground, a short to positive

A3255 The pressure sensor SZ (365) has a circuit break on transmission 5, a short circuit to ground, and a short circuit to plus.

A3277 The pressure sensor SZ (365) has a circuit break on the transmission R, a short circuit to ground, and a short circuit to plus.

A3312 KP oil temperature sensor (372) has an open circuit, a short to ground, a short to positive.

A3323 KP oil temperature sensor (372) has an open circuit, a short to ground, and a short to positive.

A3412 Internal error in the control unit

A3413 Internal error in the control unit

A3414 Internal error in the control unit

A3415 Internal error in the control unit

A3416 Internal error in the control unit

A3417 Internal error in the control unit

A3500 Power supply interrupted.

A3516 Power supply interrupted.

A3600 Internal error in the control unit

A3601 Internal error in the control unit

A3602 Internal error in the control unit

A4212 Solenoid valve A (371) has a short to positive.

A4213 Solenoid valve B (369) has a short to positive.

A4214 Solenoid valve C (367) has a short to positive.

A4215 Solenoid valve D (370) has a short to positive.

A4216 Solenoid valve E (368) has a short circuit to positive.

A4221 Solenoid valve F (364) has a short circuit to positive.

A4222 Solenoid valve G (366) has a short to positive.

A4223 Solenoid valve H (386) has a short to positive.

A4224 Solenoid valve J has a short to positive.

A4225 Solenoid valve K has a short to positive.

A4226 Solenoid valve N (Y59) has a short to positive.

A4412 Solenoid valve A (371) has a short to ground.

A4413 Solenoid valve B (369) has a short to ground.

A4414 Solenoid valve C (367) has a short to ground.

A4415 Solenoid valve D (370) has a short to ground.

A4416 Solenoid valve E (368) has a short to ground.

A4421 Solenoid valve F (364) has a short to ground.

A4422 Solenoid valve G (366) has a short to ground.

A4423 Solenoid valve H (386) has a short to ground.

A4424 Solenoid valve J has a short to ground.

A4425 Solenoid valve K has a short to ground.

A4426 Solenoid valve N (Y59) has a short to ground.

A4512 Solenoid valve A (371) has an open circuit.

A4513 Solenoid valve B (369) has an open circuit.

A4514 Solenoid valve C (367) has an open circuit.

A4515 Solenoid valve D (370) has an open circuit.

A4516 Solenoid valve E (368) has an open circuit.

A4521 Solenoid valve F (364) has an open circuit.

A4522 Solenoid valve G (366) has an open circuit.

A4523 Solenoid valve H (386) has an open circuit.

A4524 Solenoid valve J (Y78) has an open circuit.

A4525 Solenoid valve K has an open circuit.

A4526 Solenoid valve N (Y59) has an open circuit.

A4621 Solenoid valve F (364) has a short to ground.

A4626 Solenoid valve N (Y59), N (386) has a short to ground.

A5101 The ratio of the speed 'Turbine / output' when switching from gear L to gear 1 is unreliable.

A5110 The ratio of the speed 'Turbine / output' when switching from gear 1 to gear L is unreliable.

A5112 The ratio of the speed 'Turbine / output' when switching from gear 1 to gear 2 is unreliable.

A5121 The ratio of the speed 'Turbine / output' when switching from gear 2 to gear 1 is unreliable.

A5123 The ratio of the speed 'Turbine / output' when switching from gear 2 to gear 3 is unreliable.

A5124 The ratio of the speed 'Turbine / output' when switching from gear 2 to gear 4 is unreliable.

A5132 The ratio of the speed 'Turbine / output' when switching from gear 3 to gear 2 is unreliable.

A5134 Speed ratio 'Turbine / output' when switching from gear 3 to gear 4 is unreliable.

A5135 The ratio of the speed 'Turbine / output' when switching from gear 3 to gear 5 is unreliable.

A5142 The ratio of the speed 'Turbine / output' when switching from gear 4 to gear 2 is unreliable.

A5143 The ratio of the speed 'Turbine / output' when switching from gear 4 to gear 3 is unreliable.

A5145 The ratio of the speed 'Turbine / output' when switching from gear 4 to gear 5 is unreliable.

A5146 The ratio of the speed 'Turbine / output' when switching from gear 4 to gear 6 is unreliable.

A5153 The ratio of the speed 'Turbine / output' when switching from gear 5 to gear 3 is unreliable.

A5154 The ratio of the speed 'Turbine / output' when switching from gear 5 to gear 4 is unreliable.

A5156 Speed ratio 'Turbine / output' when switching from gear 5 to gear 6 is unreliable.

A5164 The ratio of the speed 'Turbine / output' when switching from gear 6 to gear 4 is unreliable.

A5165 The ratio of the speed 'Turbine / output' when switching from gear 6 to gear 5 is unreliable.

A5201 The push-button switch СЗ does not open when switching from gear L to 1st gear.

A5210 C3 push-button switch does not open when shifting from 1st gear to gear L.

A5212 The CZ push-button switch does not open when switching from 1st gear to 2nd gear.

A5221 The CZ push-button switch does not open when switching from 2nd gear to 1st gear.

A5223 The CZ push-button switch does not open when switching from 2nd gear to 3rd gear.

A5224 The CZ push-button switch does not open when switching from 2nd gear to 4th gear.

A5232 The CZ push-button switch does not open when shifting from 3rd gear to 2nd gear.

A5234 The CZ push-button switch does not open when shifting from 3rd gear to 4th gear.

A5235 The push-button switch СЗ does not open when switching from 3rd gear to 5th gear.

A5242 The push-button switch СЗ does not open when switching from 4th gear to 2nd gear.

A5243 The push-button switch СЗ does not open when switching from 4th gear to 3rd gear.

A5245 The CZ push-button switch does not open when switching from 4th gear to 5th gear.

A5246 The push-button switch СЗ does not open when switching from 4th gear to 6th gear.

A5253 The push-button switch СЗ does not open when switching from 5th gear to 3rd gear.

A5254 The CZ push-button switch does not open when switching from 5th gear to 4th gear.

A5256 The push-button switch СЗ does not open when switching from 5th gear to 6th gear.

A5264 The CZ push-button switch does not open when shifting from 6th gear to 4th gear.

A5265 The CZ push-button switch does not open when shifting from 6th gear to 5th gear.

A5271 The push-button switch СЗ does not open when switching from gear R to 1st gear.

A5272 The push-button switch СЗ does not open when switching from gear R to 2nd gear.

A5278 The C3 pressure switch does not open when switching from gear R to gear N1.

A5299 The C3 push-button switch does not open when switching from N3 gear to N2 gear.

A5308 Engine / turbine engine speed ratio when shifting from gear L to N1 is unreliable.

A5309 Engine / turbine engine speed ratio when shifting from gear L to NNC is unreliable.

A5318 The engine / turbine speed ratio when shifting from gear 1 to N1 is unreliable.

A5319 The ratio of the engine / turbine speed at switching is unreliable.

A5328 Engine / turbine engine speed ratio when shifting from gear 2 to N1 is unreliable.

A5329 The engine / turbine speed ratio when shifting from gear 2 to N2 is unreliable.

A5338 The engine / turbine speed ratio when shifting from gear 3 to N1 is unreliable.

A5339 The engine / turbine speed ratio when shifting from gear 3 to N3 is unreliable.

A5348 Engine / turbine engine speed ratio when shifting from gear 4 to N1 is unreliable.

A5349 The engine / turbine speed ratio when shifting from gear 4 to N3 is unreliable.

A5399 The engine / turbine speed ratio when shifting from N2 gears to N3 gears is unreliable.

A5401 The ratio of the speed 'Turbine / output' after switching from gear L to gear 1 is unreliable.

A5407 Speed ratio 'Turbine / output' after switching from gear L to gear R is unreliable.

A5410 The ratio of the speed 'Turbine / output' after switching from gear 1 to gear L is unreliable.

A5412 The ratio of the speed 'Turbine / output' after switching from gear 1 to gear 2 is unreliable.

A5417 The ratio of the speed 'Turbine / output' after switching from gear 1 to gear R is unreliable.

A5421 The ratio of the speed 'Turbine / output' after switching from gear 2 to gear 1 is unreliable.

A5423 The ratio of the speed 'Turbine / output' after switching from gear 2 to gear 3 is unreliable.

A5424 The ratio of the speed 'Turbine / output' after switching from gear 2 to gear 4 is unreliable.

A5427 The ratio of the speed 'Turbine / output' after switching from gear 2 to gear R is unreliable.

A5432 The ratio of the speed 'Turbine / output' after switching from gear 3 to gear 2 is unreliable.

A5434 Speed ratio "Turbine / output" after switching from gear 3 to gear 4 is unreliable.

A5435 Speed ratio "Turbine / output" after switching from gear 3 to gear 5 is unreliable.

A5442 The ratio of the speed 'Turbine / output' after switching from gear 4 to gear 2 is unreliable.

A5443 The ratio of the speed 'Turbine / output' after switching from gear 4 to gear 3 is unreliable.

A5445 The ratio of the speed 'Turbine / output' after switching from gear 4 to gear 5 is unreliable.

A5446 Speed ratio 'Turbine / output' after switching from gear 4 to gear 6 is unreliable.

A5453 The ratio of the speed 'Turbine / output' after switching from gear 5 to gear 3 is unreliable.

A5454 Speed ratio "Turbine / output" after switching from gear 5 to gear 4 is unreliable.

A5456 Speed ratio 'Turbine / output' after switching from gear 5 to gear 6 is unreliable.

A5464 Speed ratio 'Turbine / output' after switching from gear 6 to gear 4 is unreliable.

A5465 The ratio of the speed 'Turbine / output' after switching from gear 6 to gear 5 is unreliable.

A5470 Speed ratio “Turbine / output” after switching from gear R to gear L is unreliable.

A5471 The ratio of the speed 'Turbine / output' after switching from gear R to gear 1 is unreliable.

A5472 The ratio of the speed 'Turbine / output' after switching from gear R to gear 2 is unreliable.

A5480 The ratio of the speed 'Turbine / output' after switching from gear N1 to gear L is unreliable.

A5481 The ratio of the speed 'Turbine / output' after switching from gear N1 to gear 1 is unreliable.

A5482 Speed ratio 'Turbine / output' after switching from gear N1 to gear 2 is unreliable.

A5483 Speed ratio 'Turbine / output' after switching from gear N1 to gear 3.

A5485 Speed ratio 'Turbine / output' after switching from gear N1 to gear 5 is unreliable.

A5486 Speed ratio 'Turbine / output' after switching from gear N1 to gear 6 is unreliable.

A5492 Speed ratio 'Turbine / output' after switching from gear N2 to gear 2 is unreliable.

A5493 The ratio of the speed 'Turbine / output' after switching from gear N3 to gear 3 is unreliable.

A5495 The ratio of the speed 'Turbine / output' after switching from gear N3 to gear 5 is unreliable.

A5496 The ratio of the speed 'Turbine / output' after switching from gear N4 to gear 6 is unreliable.

A5507 The push-button switch СЗ does not close when switching from gear L to gear R.

A5517 The push-button switch СЗ does not close when switching from gear 1 to gear R.

A5527 The push-button switch СЗ does not close when switching from gear 2 to gear R.

A5587 C3 push-button switch does not close when switching from gear N1 to gear R.

A5597 C3 push-button switch does not close when switching from NVL to R

A5600 The ratio of the number of revolutions 'Turbine / output' in gear L is unreliable.

A5611 The ratio of the number of revolutions 'Turbine / output' in gear 1 is unreliable.

A5622 The ratio of the number of revolutions 'Turbine / output' in gear 2 is unreliable.

A5633 The ratio of the number of revolutions 'Turbine / output' in gear 3 is unreliable.

A5644 The ratio of the speed 'Turbine / output' in gear 4 is unreliable.

A5655 Speed ratio 'Turbine / Exit' in gear 5 is unreliable.

A5666 Speed ratio 'Turbine / Exit' in gear 6 is unreliable.

A5677 The ratio of the number of revolutions 'Turbine / output' in gear R is unreliable.

A5711 SZ push-button switch (365) with an unused clutch SZ in gear 1 is closed.

A5722 The SZ push-button switch (365) is closed when the SZ clutch in gear 2 is not engaged.

A5744 Push-button switch СЗ (365) with an idle clutch СЗ on gear 4 is closed.

A5766 Push-button switch SZ (365) with an unused clutch SZ in gear 6 is closed.

A5788 Push-button switch СЗ (365) with an unused clutch СЗ on gear N1 is closed.

A5799 Push-button switch СЗ (365) with an idle clutch СЗ on gear N2 / N4 is closed.

A6100 The oil temperature sensor of the retarder brake has an open circuit, a short to ground, and a short to positive.

A6212 The oil temperature sensor of the retarder brake has an open circuit, a short to ground, and a short to positive.

A6223 The oil temperature sensor of the retarder brake has an open circuit, a short to ground, and a short to positive.

A6232 Coolant temperature sensor B65 has an open circuit, short circuit to ground.

A6233 Coolant temperature sensor B65 short circuit to positive.

A6300 The Kickdown switch or brake control has a circuit break, a short to ground, a short to positive.

A6326 The Kickdown switch has an open circuit, a short to ground, a short to positive.

A6340 The drive lever "Engine / parking brake adjustment" has an open circuit, a short to ground, a short to positive.

A6341 The Kickdown switch or the brake retarder control has an open circuit, short to ground, short to positive.

A6347 The switching state of neutral activation when stopping is unreliable.

A6412 The drive lever "Engine / parking brake adjustment" has an open circuit, a short to ground.

A6423 The drive lever for engine / parking brake control has a short to positive.

A6600 The wires to the MR control unit (A6) have an open circuit, a short to ground, a short to positive.

A6611 The wires to the MR control unit (A6) have an open circuit, a short to ground, a short to positive.

A6622 The request for the retarder via the CAN IES bus is invalid or missing.

A6633 Internal error in the control unit

A6923 Solenoid valves AE, G, and J have a short to ground.

A6928 Solenoid valve F has a short to ground.

A6929 Solenoid valve N and H have a short to ground.

A6933 Internal error in the control unit

A6934 Internal error in the control unit

A6935 Internal error in the control unit

A6936 Internal error in the control unit

A6939 Internal error in the control unit

A6941 Internal error in the control unit

A6942 Internal error in the control unit

A6943 Internal error in the control unit