Allison Transmission 3000 4000 series fault code list

Allison Transmission 3000 4000 series with electronic control system Gen4

Table of fault codes

Error code	Description	Lamp Check Trans	Control system response
C1312	Low voltage signal to turn on the retarder	OFF	Retarder does not turn on
C1313	High voltage signal to turn on the retarder	OFF	Retarder does not turn on
P0122	Intermittent or low gas pedal position sensor signal	OFF	The default value is used.
P0123	High signal level pedal position sensor gas	OFF	The default value is used.
P0218	Oil temperature too high	OFF	A control pattern is used when the temperature is exceeded. Keeps 4 transfer. Prohibition of locking torque converter. Gear shift adaptation is disabled.

P0562	Low supply voltage control unit	OFF	The ban on locking torque converter. DNA
P0602	Control unit not programmed	ON	Remains neutral
P0610	Error of the additional equipment of the car with the control unit	ON	TID A calibration data is used.
P0613	Control unit processor error	OFF	All solenoids are OFF.
P0614	Incompatibility of ECM and TCM data to adjust engine torque	ON	Only neutral, rear and second gear. Torque lock inhibit, shift adaptation OFF
P0634	Control unit temperature exceeded	ON	DNS, SOL OFF, active hydraulic control.
P063E	No auto throttle throttle position input signal	ON	The default value is used.
P063f	No auto coolant temperature signal	OFF	–
P0657	HSD1 open circuit	ON	SOL OFF, DNA. Interlocking of the torque converter, prohibition of the main modulation.
P0658	HSD1 low voltage	ON	DNS, SOL OFF, hydraulic control active
P0659	HSD1 high voltage	ON	DNS, SOL OFF, hydraulic control active
P0702	The control unit did not recognize the automatic transmission configuration.	ON	Uses standard configuration
P0703	Brake Sensor Circuit Malfunction	OFF	On the garbage trucks cannot enable ND. If the code is active, then the work of the retarder is prohibited.
P0708	High level signal from the current transmission sensor.	ON	Ignore the signal of the strip switch
P070C	Low oil level sensor signal	OFF	–
P070D	High oil level sensor signal	OFF	–
P0711	Non-standard oil temperature sensor signal	ON	Uses the default temperature
P0712	Low oil temperature sensor signal	ON	Uses standard temperature value
P0713	High oil temperature sensor signal	ON	Uses standard temperature value
P0716	Non-standard Turbine Wheel Speed Sensor Signal	ON	DNS, automatic transmission is blocked on the current transfer
P0717	Turbine wheel speed sensor signal missing	ON	DNS, automatic transmission is blocked on the current transfer
P0719	ABS braking sensor signal low	OFF	Considers ABS OFF
P071A	Incompatible RELS input	ON	RELS OFF
P071D	Wrong input signal of the special function (wire 101 and 142)	ON	–
P0721	Non-standard output speed sensor signal	ON	DNS, automatic transmission remains on the current transfer

P0722	No output speed sensor signal	ON	DNS, automatic transmission stays on current gear
P0726	Non-standard engine speed sensor signal	OFF	Uses standard turbine speed value
P0727	Missing engine speed sensor signal	OFF	Uses standard turbine speed value
P0729	Wrong gear ratio in 6th gear	ON	DNS, trying to enable 5th, then 3rd gear
P0731	Incorrect gear ratio in 1st gear	ON	DNS, trying to enable 2nd, then 5th gear
P0732	Wrong gear ratio in 2nd gear	ON	DNS, trying to enable 3rd, then 5th gear
P0733	Incorrect gear ratio in 3rd gear	ON	DNS, trying to enable 4th, then 6th gear
P0734	Incorrect gear ratio in 4th gear	ON	DNS, trying to enable 5th, then 3rd gear
P0735	Invalid gear ratio in 5th gear	ON	DNS trying to enable 6th then the 3rd, then the 2nd gear
P0736	Wrong gear ratio in reverse gear	ON	DNS blocked on neutral
P0741	Slipping clutch locking torque converter	ON	–
P0752	Stuck solenoid SS1 pressure regulating valve	ON	DNS
P0776	Malfunction in the PCS2 solenoid hydraulic circuit	ON	DNS, RPR
P0777	Malfunction in the PCS2 solenoid hydraulic circuit	ON	DNS, RPR
P0796	Fault in the hydraulic circuit of the PCS3 solenoid	ON	DNS, RPR
P0797	Fault in the hydraulic circuit of the PCS3 solenoid	ON	DNS, RPR
P0842	PS1 pressure sensor low voltage.	ON	DNS, automatic transmission stays on current gear
P0843	PS1 pressure sensor high voltage.	ON	DNS, automatic transmission stays on current gear
P0847	PS2 Pressure Sensor Low Voltage	ON	–
P0848	PS2 Pressure Sensor High Voltage	ON	–
P0880	The disappearance of the power control unit during engine operation	OFF	–
P0881	Control unit voltage too low or jumping	OFF	–
P0882	The voltage on 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 transfer of the moment in first gear	ON	DNS remains on 1 transmission
P0897	Gear oil requires replacement	ON	–
P0960	Open circuit solenoid valve modulation pressure	ON	–
P0962	Low voltage in the solenoid circuit of the pressure modulating valve	ON	DNS, SOL OFF, hydraulic control is active
P0963	Modulation valve solenoid circuit high voltage pressure	ON	–
P0964	PCS2 solenoid open circuit	ON	DNS, SOL OFF, hydraulic control is active
P0966	PCS2 solenoid circuit low voltage	ON	DNS, SOL OFF, hydraulic control is active

P0967	PCS2 solenoid circuit high voltage	ON	DNS, SOL OFF, hydraulic control active
P0968	PCS3 solenoid open circuit	ON	DNS, SOL OFF, hydraulic control active
P0970	PCS3 solenoid circuit low voltage	ON	DNS, SOL OFF, hydraulic control active
P0971	PCS3 solenoid circuit high voltage	ON	DNS, SOL OFF, hydraulic control active
P0973	Low voltage in the circuit of the solenoid SS1	ON	DNS, SOL OFF, hydraulic control active
P0974	High voltage in the solenoid circuit SS1	ON	DNS, SOL OFF, hydraulic control active
P0975	SS2 solenoid open circuit	ON	On 7-speed automatic transmissions, 1st and 7th gears are not included.
P0976	Low voltage in the solenoid circuit SS2	ON	On 7-speed automatic transmissions, 1st and 7th gears are not included, prohibition of locking the torque converter
P0977	High voltage in the solenoid circuit SS2	ON	On 7-speed automatic transmissions, 1st and 7th gears are not included.
P0989	The signal from the retarder has interruptions	OFF	Retarder does not turn on
P0990	The signal from the retarder has a short circuit	OFF	Retarder does not turn on
P1739	Wrong gear ratio in low gear	ON	DNS, prohibition of work on 1 transfer
P1891	Accelerator pedal position sensor signal below normal	OFF	Uses the standard pedal depression value.
P1892	Accelerator pedal position sensor signal is above normal	OFF	Uses the standard pedal depression value.
P2184	Low voltage signal coolant temperature sensor	OFF	Uses standard temperature value
P2185	Coolant temperature sensor signal high voltage	OFF	Uses standard temperature value
P2637	Disturbance in the operation of the torque control system when changing gears SEM	ON	Prohibition of the SEM system
P2641	Disturbance in the system of torque limiting on the lower gears LRTP	ON	Disable LRTP system operation
P2669	HSD2 open circuit	ON	SOL OFF, blocking the torque converter, banning the main modulation, DNA
P2670	HSD2 low voltage	ON	DNS, SOL OFF, hydraulic control active
P2671	HSD2 high voltage	ON	DNS, SOL OFF, hydraulic control active
P2684	HSD3 open circuit	ON	SOL OFF, blocking the torque converter, banning the main modulation, DNA

P2685	HSD3 low voltage	ON	DNS, SOL OFF, hydraulic control active
P2686	HSD3 high voltage	ON	DNS, SOL OFF, hydraulic control active
P2714	Fault in the hydraulic circuit of the PCS4 solenoid	ON	DNS, RPR
P2715	Fault in the hydraulic circuit of the PCS4 solenoid	ON	DNS, SOL OFF, hydraulic control active
P2718	PCS4 solenoid open circuit	ON	DNS, SOL OFF, hydraulic control active
P2720	PCS4 solenoid circuit low voltage	ON	DNS, SOL OFF, hydraulic control active
P2721	PCS4 solenoid circuit high voltage	ON	DNS, SOL OFF, hydraulic control active
P2723	Malfunction in the PCS1 solenoid hydraulic circuit	ON	DNS, RPR
P2724	Malfunction in the PCS1 solenoid hydraulic circuit	ON	DNS, RPR
P2727	PCS1 solenoid open circuit	ON	DNS, SOL OFF, hydraulic control active
P2729	PCS1 solenoid circuit low voltage	ON	DNS, SOL OFF, hydraulic control active
P2730	PCS1 solenoid circuit high voltage	ON	DNS, SOL OFF, hydraulic control active
P2736	PCS5 solenoid open circuit	ON	The ban on the work of the retarder
P2738	PCS5 solenoid circuit low voltage	ON	The prohibition of work on the 1st gear, the work of the retarder, the lock of the torque converter
P2739	PCS5 solenoid circuit high voltage	ON	The ban on the work of the retarder
P2740	High oil retarder temperature	OFF	–
P2742	Low signal level of the retarder oil temperature sensor	OFF	Uses standard oil temperature
P2743	High signal level of the oil retarder temperature sensor	OFF	Uses standard oil temperature
P2761	Open circuit solenoid lockout torque converter	ON	Prohibition of locking torque converter
P2763	Low voltage in the lock-up torque converter solenoid circuit	ON	Prohibition of locking torque converter
P2764	High voltage in the torque converter lock-up solenoid circuit	ON	Prohibition of locking torque converter
P2789	Friction clutch wear reaches the limit value	ON	–
P278A	Erroneous signal Kickdown	OFF	Kickdown mode ban
P2793	Communication error with gear switch	ON	Ignores pulse width modulation, if the signal through the CAN bus is also lost, it is blocked in the last direction selected
P2808	Fault in the hydraulic circuit of the PCS6 solenoid	ON	DNS, RPR

P2809	Fault in the hydraulic circuit of the PCS6 solenoid	ON	DNS, RPR
P2812	PCS6 solenoid open circuit	ON	DNS, SOL OFF, hydraulic control active
P2814	PCS6 solenoid circuit low voltage	ON	DNS, SOL OFF, hydraulic control active
P2815	PCS6 solenoid circuit high voltage	ON	DNS, SOL OFF, hydraulic control active
U0001	High Speed CAN Bus Counter (IESCAN) overflow	OFF	Uses standard values, prohibiting the operation of the torque control system when changing gears
U0010	CAN Bus Counter Overflow (IESCAN)	OFF	Uses standard values, prohibiting the operation of the torque control system when changing gears
U0100	Loss of communication with engine / powertrain unit (J1586)	ON	Uses standard values
U0103	Loss of communication with the first gear selector	ON	Remains in the selected gear, monitors the signal to change the direction of movement. The display goes out for 10 seconds, then shows – / – – / –
U0115	Communication error with engine control unit	ON	Uses standard values, DNA
U0291	Communication error with secondary gear selector	ON	Remains in the selected gear, monitors the signal to change the direction of movement. The display goes out for 10 seconds, then shows – / – – / –
U0304	Primary gear selector not compatible with J1939 protocol	ON	DNS blocked in neutral
U0333	Secondary switch not compatible with J1939 protocol	ON	DNS blocked in neutral
U0400	Violation of data transmission protocol J1939	ON	–
U0404	Inadequate information from the primary gear selector	ON	Remains in the selected gear, monitors the signal to change the direction of movement. The display goes out for 10 seconds, then shows – / – – / –
U0442	The control unit receives incorrect data from the engine / power unit control unit that is included in the J1939 data bus.	OFF	–
U0592	Inadequate information from the secondary gear selector	ON	Remains in the selected gear, monitors the signal to change the direction of movement. The display goes out on 10 sec, then shows – / – – / –

When the control unit recognizes an error of control, the corresponding error code is stored in memory. To save there are 5 memory cells, the contents of which can be read through the display switch gear. Cells have names from “d1” to “d5”.

Stop the car to read the codes. Ignition must be on!

• Read on button switch: Both buttons ↑ ↓ at the same time hold – With engine running 1 time; With the engine running 2 times.
• Reading on lever switch: Press the button menu – With the engine stopped 1 time; With the engine running 2 times.

The display will show the error code stored in the “d1” field. Codes consist of a letter and a four-digit number. The code in this field will be displayed until the next field is selected with the Mode button or the reading of codes is completed.

Important note: with active codes, the lamp ” Mode ON” lights up (Red LED on the mode switching button). Only active codes lead to blocking of automatic transmission functions.

End reading. To leave the diagnostic mode, select the neutral or press the “Menu” button or simultaneously two arrow keys until the display shows “N N “

In case of errors, call the service center.

Abbreviations

CAN (Controller Area Network) – Data bus Network via SAE J1939 protocol for connecting various vehicle systems.

DNA (Do Not Adapt) – Prohibition of adaptive mode automatic transmission.

DNS (Do Not Shift) – Prohibition of shifting. Automatic transmission remains on a certain gear and does not respond to commands. Torque converter is not locked.

ECM (Engine Control Module) – Engine control unit.

HSD 1, 2, … (High Side Driver) – Power supply control valves 1, 2, …

LRTP (Low Range Torque Protection) – Engine torque limitation on 1-3 gears.

PCS (Pressure Control Solenoid) – Pressure control solenoid.

RPR (Return to Previous Range) – Switch to the previous transfer.

SEM (Shift Energy Management) – Control system of the engine torque M during gear changes.

SOL OFF (Solenoids OFF) All solenoids are electrically disconnected. Until the engine is running, and the oil pump is spinning, movement is possible.

SS (Shift Solenoid) – Solenoid gear shift.

TID (Trans ID ) – TCM function to determine the configuration of the automatic transmission and the connected devices.

TCC – Torque converter lock -up clutch.

TCM – Transmission Control Module