Allison Transmission Fault Codes

Error code table, automatic transmission Series 3000, 4000 with electronic control system Gen 4

Error code Description Lamp Check trans Control system response
C1312 Retarder trigger low voltage off Retarder does not turn on
C1313 Retarder trigger signal high voltage off Retarder does not turn on
P0122 Intermittent or low gas pedal position sensor signal off Default value is used
P0123 High gas pedal position sensor off Default value is used
P0218 Oil temperature is too high off A control pattern is used in case of temperature rise. Holds 4th gear. Prohibition of torque converter lock. Gear shift adaptation is deactivated.

 

P0562 Control unit low voltage off Prohibition of torque converter lockout. DNA
P0602 The control unit is not programmed On Remains neutral
P0610 Error of additional equipment of the car with the control unit On Uses TID A Calibration Data
P0613 Control Unit CPU Error off All solenoids are off
P0614 Incompatibility of ECM and TCM data   for engine torque control On Only neutral, reverse and second gear. Torque lock inhibit, shift adaptation disabled
P0634 Control unit temperature exceeded On DNS , SOL OFF , actively hydraulic control.
P063E There is no input signal about the position of the throttle during auto detection On Default value is used
P063F No coolant temperature signal during auto detection off
P0657 Open circuit HSD1 On SOL OFF , DNA . Prohibition of torque converter lock, prohibition of main modulation.
P0658 Low voltage in the HSD circuit 1 On DNS , SOL OFF , hydraulic control is active
P0659 High voltage in the HSD circuit 1 On DNS , SOL OFF , hydraulic control is active
P0702 The control unit did not recognize the automatic transmission configuration On Uses standard configuration
P0703 Malfunction in a chain of the gauge of a brake off On garbage trucks, the inclusion of N – D is not possible . If the code is active, then the retarder is prohibited.
P0708 High signal from the current gear sensor. On Ignores the signal of the strip switch
P070C Low oil level sensor signal off
P070D High oil level sensor signal off
P0711 Abnormal oil temperature sensor signal On Uses the default temperature
P0712 Low oil temperature sensor signal On Uses standard temperature
P0713 High oil temperature sensor signal On It uses the standard value tamper Aturi
P0716 Turbine wheel speed sensor abnormal signal On DNS , automatic transmission is blocked on the current transfer
P0717 No turbine wheel speed sensor signal On DNS , automatic transmission is blocked on the current transfer
P0719 ABS brake signal low off Takes ABS off
P071A Incompatible RELS Input On RELS function is disabled
P071D Incorrect special function input (wire 101 and 142) On
P0721 Abnormal output speed sensor signal On DNS , automatic transmission remains in the current transmission

 

P0722 No output speed sensor signal On DNS , automatic transmission remains in the current transmission
P0726 Abnormal engine speed sensor signal off Uses standard turbine speed
P0727 Missing engine speed sensor signal off Uses standard turbine speed
P0729 6th gear ratio incorrect On DNS , trying to enable 5th , then 3rd gear
P0731 1st gear ratio incorrect On DNS , trying to enable 2nd, then 5th gear
P0732 2nd gear ratio incorrect On DNS , trying to enable 3rd, then 5th gear
P0733 3rd gear ratio incorrect On DNS , trying to enable 4th, then 6th gear
P0734 4th gear ratio incorrect On DNS , trying to turn on 5th, then 3rd gear
P0735 5th gear ratio incorrect On DNS , trying to turn on the 6th, then 3rd, then 2nd gear
P0736 Incorrect gear ratio in reverse gear On DNS blocked on neutral
P0741 Torque converter slip clutch slides On
P0752 Jamming solenoid SS 1 pressure control valve On DNS
P0776 Malfunction in the hydraulic circuit of the PCS 2 solenoid On DNS, RPR
P0777 Malfunction in the hydraulic circuit of the PCS 2 solenoid On DNS, RPR
P0796 Malfunction in the hydraulic circuit of the PCS 3 solenoid On DNS, RPR
P0797 Malfunction in the hydraulic circuit of the PCS 3 solenoid On DNS, RPR
P0842 PS voltage sensor low voltage 1. On DNS , automatic transmission remains in the current transmission
P0843 Pressure Sensor High Voltage PS 1. On DNS , automatic transmission remains in the current transmission
P0847 PS 2 pressure sensor low voltage On
P0848 High voltage pressure sensor PS 2 On
P0880 Power failure of the control unit during engine operation off
P0881 The voltage at the control unit is too low or is skipping off
P0882 The voltage at the control unit is below normal. On DNS , SOL OFF ,

hydraulic control is active

P0883 The voltage on the control unit is above normal off
P088A Oil filter clogged off
P088B Oil filter heavily clogged off
P0894 No torque transmission in first gear On DNS remains in 1st gear
P0897 Gear oil needs to be replaced On
P0960 Open circuit pressure modulation valve solenoid On
P0962 Low voltage modulation valve solenoid circuit On DNS , SOL OFF , hydraulic control active
P0963 High voltage in the pressure modulation valve solenoid circuit On
P0964 PCS2 Solenoid Open Circuit On DNS , SOL OFF , hydraulic control active
P0966 PCS 2 Solenoid Circuit Low Voltage On DNS , SOL OFF ,

hydraulic control is active

 

P0967 PCS 2 Solenoid High Voltage On DNS , SOL OFF ,

hydraulic control is active

P0968 PCS3 Solenoid Open Circuit On DNS , SOL OFF ,

hydraulic control is active

P0970 PCS 3 Solenoid Circuit Low Voltage On DNS , SOL OFF ,

hydraulic control is active

P0971 PCS 3 Solenoid Circuit High Voltage On DNS , SOL OFF ,

hydraulic control is active

P0973 Low voltage in the solenoid circuit SS 1 On DNS , SOL OFF ,

hydraulic control is active

P0974 High voltage in the solenoid circuit SS 1 On DNS , SOL OFF ,

hydraulic control is active

P0975 Open circuit solenoid SS2 On On 7-speed automatic transmissions, 1st and 7th gears are not included
P0976 Low voltage in the solenoid circuit SS 2 On On 7-speed automatic transmissions, 1st and 7th gears are not activated, torque converter lockout
P0977 High voltage in the solenoid circuit SS 2 On On 7-speed automatic transmissions, 1st and 7th gears are not included
P0989 The signal from the retarder is intermittent off Retarder does not turn on
P0990 Retarder sensor signal has a short circuit off Retarder does not turn on
P1739 Incorrect gear ratio in low gear On DNS , prohibition of work in 1 gear
P1891 Accelerator pedal position sensor signal below normal off Uses the standard value for pedal depression
P1892 Accelerator Pedal Position Sensor Signal Above Normal off Uses the standard value for pedal depression
P2184 Coolant temperature sensor signal low voltage off Uses standard temperature
P2185 Coolant Temperature Sensor High Voltage off Uses standard temperature
P2637 Malfunction of the torque control system when shifting gears SEM On Disabling SEM
P2641 Violation of the torque limiting system in the lower gears of LRTP On Disabling LRTP
P2669 Open circuit HSD2 On SOL OFF , torque converter inhibit inhibit, main modulation inhibit, DNA
P2670 HSD 2 low voltage On DNS , SOL OFF , hydraulic control active
P2671 High voltage in the HSD 2 circuit On DNS , SOL OFF , hydraulic control active
P2684 Open circuit HSD3 On SOL OFF , torque converter inhibit inhibit, main modulation inhibit, DNA
P2685 HSD 3 Low Voltage On DNS , SOL OFF ,

hydraulic control is active

P2686 HSD 3 High Voltage On DNS , SOL OFF ,

hydraulic control is active

P2714 Malfunction in the hydraulic circuit of the PCS 4 solenoid On DNS, RPR
P2715 Malfunction in the hydraulic circuit of the PCS 4 solenoid On DNS , SOL OFF ,

hydraulic control is active

P2718 PCS4 Solenoid Open Circuit On DNS , SOL OFF ,

hydraulic control is active

P2720 PCS 4 Solenoid Circuit Low Voltage On DNS , SOL OFF ,

hydraulic control is active

P2721 PCS 4 Solenoid High Voltage On DNS , SOL OFF ,

hydraulic control is active

P2723 Malfunction in the hydraulic circuit of the PCS 1 solenoid On DNS, RPR
P2724 Malfunction in the hydraulic circuit of the PCS 1 solenoid On DNS, RPR
P2727 PCS1 Solenoid Open Circuit On DNS , SOL OFF ,

hydraulic control is active

P2729 Low voltage in the PCS 1 solenoid circuit On DNS , SOL OFF ,

hydraulic control is active

P2730 High voltage in the PCS 1 solenoid circuit On DNS , SOL OFF ,

hydraulic control is active

P2736 PCS5 Solenoid Open Circuit On Prohibition of retarder operation
P2738 PCS 5 Solenoid Circuit Low Voltage On Prohibition of work in 1st gear, retarder operation, torque converter lock
P2739 PCS 5 Solenoid Circuit High Voltage On Prohibition of retarder operation
P2740 High temperature oil retarders off
P2742 Retarder oil temperature sensor low signal off Uses standard oil temperature
P2743 Retarder oil temperature sensor high signal off Uses standard oil temperature
P2761 Torque converter solenoid open circuit On Torque converter lockout
P2763 Low voltage in the torque converter lock-up solenoid circuit On Torque converter lockout
P2764 High voltage lock-up torque converter solenoid circuit On Torque converter lockout
P2789 Clutch wear reaches limit value On
P278A Wrong Kickdown Signal off Kickdown mode ban
P2793 Gear Shift Communication Error On Ignores PWM control, if the signal through the CAN – bus is also lost, the latter is locked in a selected direction
P2808 Malfunction in the hydraulic circuit of the PCS 6 solenoid On DNS, RPR
P2809 Malfunction in the hydraulic circuit of the PCS 6 solenoid On DNS, RPR
P2812 PCS6 Solenoid Open Circuit On DNS , SOL OFF ,

hydraulic control is active

P2814 PCS 6 Solenoid Circuit Low Voltage On DNS , SOL OFF ,

hydraulic control is active

P2815 PCS 6 Solenoid Circuit High Voltage On DNS , SOL OFF ,

hydraulic control is active

U0001 High Speed CAN Bus Counter Overflow ( IESCAN ) off Uses standard values; disables torque control when shifting gears
U0010 CAN Bus Counter Overflow ( IESCAN ) off Uses standard values; disables torque control when shifting gears
U0100 Loss of communication with the engine / power unit ( J 1586) On Uses default values
U0103 Lost Communication With First Gear Shift On Remains in the selected gear, monitors the signal for changing the direction of movement. The display goes blank for 10 seconds, then shows – / – – / –
U0115 Communication error with engine control unit On Uses standard values, DNA
U0291 Communication error with the secondary gear shifter On Remains in the selected gear, monitors the signal for changing the direction of movement. The display goes blank for 10 seconds, then shows – / – – / –
U0304 Primary gear selector not compatible with J 1939 protocol On DNS blocked in neutral
U0333 Secondary switch not compatible with J 1939 protocol On DNS blocked in neutral
U0400 Violation of data transmission protocol J 1939 On
U0404 Inadequate information from the primary gear shifter On Remains in the selected gear, monitors the signal for changing the direction of movement. The display goes blank for 10 seconds, then shows – / – – / –
U0442 The control unit receives incorrect data from the engine / powertrain control unit included in data bus J 1939 off
U0592 Inadequate information from the secondary gear shifter On Remains in the selected gear, monitors the signal for changing the direction of movement. The display goes blank for 10 seconds, then shows – / – – / –