Allison Transmission Codes for 5th Generation Electronic Shift Selector

P0122 PEDAL POSITION SENSOR CIRCUIT LOW VOLTAGE

P0123 PEDAL POSITION SENSOR CIRCUIT HIGH VOLTAGE

P0218 TRANSMISSION FLUID OVER TEMPERATURE CONDITION

P0562 SYSTEM VOLTAGE LOW

P057C BRAKE PEDAL POSITION SENSOR LOW

P057D BRAKE PEDAL POSITION SENSOR HIGH 

P0602 TCM NOT PROGRAMMED

P0603 INTERNAL CONTROL MODULE KEEP ALIVE MEMORY ERROR

P0604 CONTROL MODULE RANDOM ACCESS MEMORY (RAM)

P0607 CONTROL  MODULE PERFORMANCE

P060C MAIN PROCESSOR MONITOR FAULT

P0614 TORQUE CONTROL DATA MISMATCH - ECM/TCM

P0634 TCM INTERNAL TEMPERATURE TOO HIGH

P0642 SENSOR REFERENCE VOLTAGE “A” CIRCUIT FAULT

P0652 SENSOR REFERENCE VOLTAGE “B” CIRCUIT FAULT

P0657 ACTUATOR SUPPLY CIRCUIT VOLTAGE 1 OPEN (HSD 1) 

P0658 ACTUATOR SUPPLY CIRCUIT VOLTAGE 1 LOW (HSD 1) 

P0659 ACTUATOR SUPPLY CIRCUIT VOLTAGE 1 HIGH (HSD 1) 

P0701 TRANSMISSION CONTROL SYSTEM PERFORMANCE 

P0703 BRAKE SWITCH CIRCUIT

P0708 TRANSMISSION RANGE SENSOR CIRCUIT HIGH

P070C TRANSMISSION FLUID LEVEL SENSOR CIRCUIT LOW

P070D TRANSMISSION FLUID LEVEL SENSOR CIRCUIT HIGH

P0712 TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT LOW 

P0713 TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT HIGH 

P0715 TURBINE SHAFT SPEED SENSOR CIRCUIT

P0716 TURBINE SHAFT SPEED SENSOR CIRCUIT PERFORMANCE

P0717 TURBINE SHAFT SPEED SENSOR CIRCUIT NO SIGNAL

P071A NEUTRAL AT STOP INPUT FAILED ON

P071D GENERAL PURPOSE INPUT FAULT

P0720 OUTPUT SHAFT SPEED SENSOR CIRCUIT

P0721 OUTPUT SHAFT SPEED SENSOR CIRCUIT PERFORMANCE 

P0722 OUTPUT SHAFT SPEED SENSOR CIRCUIT NO SIGNAL 

P0725 ENGINE SPEED SENSOR CIRCUIT

P0726 ENGINE SPEED SENSOR CIRCUIT PERFORMANCE

P0727 ENGINE SPEED SENSOR CIRCUIT NO SIGNAL

P0729 INCORRECT 6TH GEAR RATIO

P0731 INCORRECT 1ST GEAR RATIO

P0732 INCORRECT 2ND GEAR RATIO

P0733 INCORRECT 3RD GEAR RATIO

P0734 INCORRECT 4TH GEAR RATIO

P0735 INCORRECT 5TH GEAR RATIO

P0736 INCORRECT REVERSE RATIO

P0741 TORQUE CONVERTER CLUTCH (TCC) SYSTEM STUCK OFF

P0752 SHIFT SOLENOID 1 VALVE PERFORMANCE - STUCK ON

P076F INCORRECT 7TH GEAR RATIO

P0776 PRESSURE CONTROL SOLENOID (PCS) 2 STUCK OFF 

P0777 PRESSURE CONTROL SOLENOID (PCS) 2 STUCK ON 

P077F INCORRECT REVERSE 2 RATIO

P0796 PRESSURE CONTROL SOLENOID (PCS) 3 STUCK OFF

P0797 PRESSURE CONTROL SOLENOID (PCS) 3 STUCK ON

P07D9 INCORRECT 8TH GEAR RATIO

P07F6 INCORRECT 9TH GEAR RATIO

P07F7 INCORRECT 10TH GEAR RATIO

P081B CRANK ENABLE CIRCUIT HIGH

P0837 FOUR WHEEL DRIVE (4WD) SWITCH CIRCUIT RANGE/PERFORMANCE

P083C TRANSMISSION FLUID PRESSURE SWITCH 6 CIRCUIT LOW 

P083C TRANSMISSION FLUID PRESSURE SWITCH 6 CIRCUIT LOW 

P083D TRANSMISSION FLUID PRESSURE SWITCH 6 CIRCUIT HIGH 

P083D TRANSMISSION FLUID PRESSURE SWITCH 6 CIRCUIT HIGH 

P0842 TRANSMISSION FLUID PRESSURE SWITCH 1 CIRCUIT LOW 

P0843 TRANSMISSION FLUID PRESSURE SWITCH 1 CIRCUIT HIGH 

P0847 TRANSMISSION FLUID PRESSURE SWITCH 2 CIRCUIT LOW 

P0848 TRANSMISSION FLUID PRESSURE SWITCH 2 CIRCUIT HIGH

P084C TRANSMISSION FLUID PRESSURE SWITCH TCC CIRCUIT LOW 

P084D TRANSMISSION FLUID PRESSURE SWITCH TCC CIRCUIT HIGH 

P0872 TRANSMISSION FLUID PRESSURE SWITCH 3 CIRCUIT LOW

P0873 TRANSMISSION FLUID PRESSURE SWITCH 3 CIRCUIT HIGH 

P0877 TRANSMISSION FLUID PRESSURE SWITCH 4 CIRCUIT LOW 

P0878 TRANSMISSION FLUID PRESSURE SWITCH 4 CIRCUIT HIGH 

P0880 TCM POWER INPUT SIGNAL

P0881 TCM POWER INPUT SIGNAL PERFORMANCE

P0882 TCM POWER INPUT SIGNAL LOW

P0883 TCM POWER INPUT SIGNAL HIGH

P088A TRANSMISSION FILTER MAINTENANCE ALERT

P088B TRANSMISSION FILTER MAINTENANCE REQUIRED

P0894 UNEXPECTED MECHANICAL GEAR DISENGAGEMENT

P0897 TRANSMISSION FLUID DETERIORATED

P0960 MAIN PRESSURE MODULATION SOLENOID CONTROL CIRCUIT OPEN 

P0961 MAIN PRESSURE MODULATION SOLENOID SYSTEM PERFORMANCE 

P0962 MAIN PRESSURE MODULATION SOLENOID CONTROL CIRCUIT LOW 

P0963 MAIN PRESSURE MODULATION SOLENOID CONTROL CIRCUIT HIGH 

P0964 PRESSURE CONTROL SOLENOID (PCS) 2 CONTROL CIRCUIT OPEN 

P0966 PRESSURE CONTROL SOLENOID (PCS) 2 CONTROL CIRCUIT LOW 

P0967 PRESSURE CONTROL SOLENOID (PCS) 2 CONTROL CIRCUIT HIGH 

P0968 PRESSURE CONTROL SOLENOID (PCS) 3 CONTROL CIRCUIT OPEN 

P0970 PRESSURE CONTROL SOLENOID (PCS) 3 CONTROL CIRCUIT LOW 

P0971 PRESSURE CONTROL SOLENOID (PCS) 3 CONTROL CIRCUIT HIGH 

P0973 SHIFT SOLENOID 1 CONTROL CIRCUIT LOW

P0974 SHIFT SOLENOID 1 CONTROL CIRCUIT HIGH

P0976 SHIFT SOLENOID 2 CONTROL CIRCUIT LOW

P0977 SHIFT SOLENOID 2 CONTROL CIRCUIT HIGH

P0979 SHIFT SOLENOID 3 CONTROL CIRCUIT LOW

P097A SHIFT SOLENOID 1 CONTROL CIRCUIT OPEN

P097B SHIFT SOLENOID 2 CONTROL CIRCUIT OPEN

P097C SHIFT SOLENOID 3 CONTROL CIRCUIT OPEN

P0980 SHIFT SOLENOID 3 CONTROL CIRCUIT HIGH

P0989 RETARDER PRESSURE SENSOR CIRCUIT LOW

P0990 RETARDER PRESSURE SENSOR CIRCUIT HIGH

P0994 TRANSMISSION FLUID PRESSURE SWITCH 5 CIRCUIT LOW

P0994 TRANSMISSION FLUID PRESSURE SWITCH 5 CIRCUIT LOW

P0995 TRANSMISSION FLUID PRESSURE SWITCH 5 CIRCUIT HIGH 

P0995 TRANSMISSION FLUID PRESSURE SWITCH 5 CIRCUIT HIGH 

P0A0B HIGH VOLTAGE INTERLOCK LOOP 1 INVALID

P0A2F DRIVE MOTOR OVER TEMPERATURE

P0A44 DRIVE MOTOR OVERSPEED

P0A7D ENERGY STORAGE SYSTEM OVER DISCHARGE

P0A90 DRIVE MOTOR INVALID DIRECTION

P0AA6 ISOLATION STATUS INVALID

P0B37 SERVICE DISCONNECT INVALID

P0C19 DRIVE MOTOR TORQUE DELIVERED PERFORMANCE

P0C26 ELECTRIC PUMP POWER DRAW TOO HIGH

P0C2C ELECTRIC PUMP SPEED INCORRECT

P0C30 ENERGY STORAGE SYSTEM OVER CHARGE

P0C76 HIGH VOLTAGE BUS DISCHARGE TIME TOO LONG

P0DA8 HYBRID BATTERY VOLTAGE/DRIVE MOTOR INVERTER VOLTAGE CORRELATION

P1739 INCORRECT LOW GEAR RATIO

P1790 GEAR SHIFT MODULE 1 CALIBRATION INVALID

P1791 GEAR SHIFT MODULE 2 CALIBRATION INVALID

P1891 THROTTLE POSITION SENSOR PWM SIGNAL LOW

P1892 THROTTLE POSITION SENSOR PWM SIGNAL HIGH

P1901 COUNTERSHAFT SPEED SENSOR CIRCUIT

P1902 COUNTERSHAFT SPEED SENSOR PERFORMANCE

P1903 COUNTERSHAFT SPEED SENSOR NO ACTIVITY

P1907 SHIFT FORK STUCK MOVING TO REVERSE POSITION

P1922 TRANSMISSION FLUID PRESSURE SWITCH A CIRCUIT LOW 

P1923 TRANSMISSION FLUID PRESSURE SWITCH A CIRCUIT HIGH 

P1927 TRANSMISSION FLUID PRESSURE SWITCH B CIRCUIT LOW 

P1928 TRANSMISSION FLUID PRESSURE SWITCH B CIRCUIT HIGH 

P192C TRANSMISSION FLUID PRESSURE SWITCH C CIRCUIT LOW 

P192D TRANSMISSION FLUID PRESSURE SWITCH C CIRCUIT HIGH 

P1A01 TRANSMISSION CONTROL SYSTEM 2 PERFORMANCE

P1A0C TRANSMISSION FLUID LEVEL SENSOR 2 CIRCUIT LOW 

P1A0D TRANSMISSION FLUID LEVEL SENSOR 2 CIRCUIT HIGH 

P1A11 DC/DC CONVERTER “A” FAULT ACTIVE

P1A12 DC/DC CONVERTER “B” FAULT ACTIVE

P1A13 ELECTRIC PUMP FAULT ACTIVE

P1A14 ENERGY STORAGE SYSTEM FAULT ACTIVE

P1A15 INVERTER FAULT ACTIVE

P1A20 HIGH VOLTAGE INTERLOCK LOOP 2 INVALID

P1A30 INVERTER OPERATING MODE NOT CORRELATED

P1A31 ENERGY STORAGE SYSTEM OPERATING MODE NOT CORRELATED

P1A32 DC/DC CONVERTER “A” OPERATING MODE NOT CORRELATED 

P1A33 DC/DC CONVERTER “B” OPERATING MODE NOT CORRELATED 

P1A34 ELECTRIC PUMP OPERATING MODE NOT CORRELATED

P1A3F INVERTER ISOLATION FAULT

P1A40 HIGH VOLTAGE BUS POWER BALANCE

P2184 ENGINE COOLANT TEMPERATURE SENSOR 2 CIRCUIT LOW 

P2185 ENGINE COOLANT TEMPERATURE SENSOR 2 CIRCUIT HIGH 

P2637 TORQUE MANAGEMENT FEEDBACK SIGNAL A

P2641 TORQUE MANAGEMENT FEEDBACK SIGNAL B

P2669 ACTUATOR SUPPLY CIRCUIT VOLTAGE 2 OPEN (HSD 2) 

P2670 ACTUATOR SUPPLY CIRCUIT VOLTAGE 2 LOW (HSD 2) 

P2671 ACTUATOR SUPPLY CIRCUIT VOLTAGE 2 HIGH (HSD 2) 

P2684 ACTUATOR SUPPLY CIRCUIT VOLTAGE 3 OPEN (HSD 3) 

P2685 ACTUATOR SUPPLY CIRCUIT VOLTAGE 3 LOW (HSD 3) 

P2686 ACTUATOR SUPPLY CIRCUIT VOLTAGE 3 HIGH (HSD 3) 

P26E7 ACTUATOR SUPPLY CIRCUIT VOLTAGE 4 OPEN (HSD 4) 

P26E8 ACTUATOR SUPPLY CIRCUIT VOLTAGE 4 LOW (HSD 4) 

P26E9 ACTUATOR SUPPLY CIRCUIT VOLTAGE 4 HIGH (HSD 4) 

P2714 PRESSURE CONTROL SOLENOID (PCS) 4 STUCK OFF

P2715 PRESSURE CONTROL SOLENOID (PCS) 4 STUCK ON

P2718 PRESSURE CONTROL SOLENOID (PCS) 4 CONTROL CIRCUIT OPEN 

P2720 PRESSURE CONTROL SOLENOID (PCS) 4 CONTROL CIRCUIT LOW 

P2721 PRESSURE CONTROL SOLENOID (PCS) 4 CONTROL CIRCUIT HIGH 

P2723 PRESSURE CONTROL SOLENOID (PCS) 1 STUCK OFF

P2724 PRESSURE CONTROL SOLENOID (PCS) 1 STUCK ON

P2727 PRESSURE CONTROL SOLENOID (PCS) 1 CONTROL CIRCUIT OPEN 

P2729 PRESSURE CONTROL SOLENOID (PCS) 1 CONTROL CIRCUIT LOW 

P2730 PRESSURE CONTROL SOLENOID (PCS) 1 CONTROL CIRCUIT HIGH 

P2732 PRESSURE CONTROL SOLENOID (PCS) 5 STUCK OFF

P2733 PRESSURE CONTROL SOLENOID (PCS) 5 STUCK ON

P2736 PRESSURE CONTROL SOLENOID (PCS) 5 CONTROL CIRCUIT OPEN 

P2738 PRESSURE CONTROL SOLENOID (PCS) 5 CONTROL CIRCUIT LOW 

P2739 PRESSURE CONTROL SOLENOID (PCS) 5 CONTROL CIRCUIT HIGH 

P273F RETARDER OIL TEMPERATURE SENSOR OVER TEMPERATURE CONDITION 

P2742 RETARDER OIL TEMPERATURE SENSOR CIRCUIT LOW

P2743 RETARDER OIL TEMPERATURE SENSOR CIRCUIT HIGH

P274B TRANSMISSION FLUID TEMPERATURE SENSOR “C” CIRCUIT RANGE/PERFORMANCE

P274C TRANSMISSION FLUID TEMPERATURE SENSOR “C” CIRCUIT LOW 

P274D TRANSMISSION FLUID TEMPERATURE SENSOR “C” CIRCUIT HIGH 

P274F TRANSMISSION FLUID SENSOR “C” OVER TEMPERATURE CONDITION

P2761 TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL SOLENOID (PCS) CONTROL CIRCUIT/OPEN

P2763 TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL SOLENOID (PCS) CONTROL CIRCUIT HIGH

P2764 TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL SOLENOID (PCS) CONTROL CIRCUIT LOW

P2789 TRANSMISSION CLUTCH LIFE EXPIRED (CLUTCH ADAPTIVE LEARNING AT LIMIT)

P2793 GEAR SHIFT DIRECTION CIRCUIT

P2808 PRESSURE CONTROL SOLENOID (PCS) 6 STUCK OFF

P2809 PRESSURE CONTROL SOLENOID (PCS) 6 STUCK ON

P2812 PRESSURE CONTROL SOLENOID (PCS) 6 CONTROL CIRCUIT OPEN 

P2814 PRESSURE CONTROL SOLENOID (PCS) 6 CONTROL CIRCUIT LOW 

P2815 PRESSURE CONTROL SOLENOID (PCS) 6 CONTROL CIRCUIT HIGH 

P2817 PRESSURE CONTROL SOLENOID (PCS) 7 STUCK OFF

P2818 PRESSURE CONTROL SOLENOID (PCS) 7 STUCK ON

P281B PRESSURE CONTROL SOLENOID (PCS) 7 CONTROL CIRCUIT OPEN

P281D PRESSURE CONTROL SOLENOID (PCS) 7 CONTROL CIRCUIT LOW

P281E PRESSURE CONTROL SOLENOID (PCS) 7 CONTROL CIRCUIT HIGH

P2824 PRESSURE CONTROL SOLENOID (PCS) 8 CONTROL CIRCUIT OPEN

P2826 PRESSURE CONTROL SOLENOID (PCS) 8 CONTROL CIRCUIT LOW

P2827 PRESSURE CONTROL SOLENOID (PCS) 8 CONTROL CIRCUIT HIGH

P2832 SHIFT FORK POSITION CIRCUIT PERFORMANCE

P2833 SHIFT FORK POSITION CIRCUIT LOW

P2834 SHIFT FORK POSITION CIRCUIT HIGH

P2849 SHIFT FORK STUCK MOVING TO FORWARD POSITION

P284D SHIFT FORK UNREQUESTED MOVEMENT

P2879 ENGINE/HYBRID CLUTCH SYSTEM SLIPPING

P287A ENGINE CLUTCH STUCK ON

C1312 RETARDER REQUEST SENSOR CIRCUIT LOW

C1313 RETARDER REQUEST SENSOR CIRCUIT HIGH

U0073 CAN COMMUNICATION BUS 1  OFF

U0074 CAN COMMUNICATION BUS 2 OFF

U0100 LOST COMMUNICATIONS WITH ECM A

U0103 LOST COMMUNICATION WITH GEAR SHIFT MODULE 1

U0110 LOST COMMUNICATION WITH DRIVE MOTOR CONTROL MODULE

U0111 LOST COMMUNICATION WITH ENERGY STORAGE SYSTEM CONTROL MODULE

U0287 LOST COMMUNICATION WITH ELECTRIC PUMP

U0291 LOST COMMUNICATION WITH GEAR SHIFT MODULE 2

U0298 LOST COMMUNICATION WITH DC/DC CONVERTER “A”

U0299 LOST COMMUNICATION WITH DC/DC CONVERTER “B”

U0304 GEAR SHIFT MODULE 1 INCOMPATIBLE

U0333 GEAR SHIFT MODULE 2 INCOMPATIBLE

U0404 GEAR SHIFT MODULE 1 INVALID DATA

U0411 INVERTER INVALID DATA

U0412 ENERGY STORAGE SYSTEM INVALID DATA

U0588 ELECTRIC PUMP INVALID DATA

U0592 GEAR SHIFT MODULE 2 INVALID DATA

U0599 DC/DC CONVERTER “A”  INVALID DATA

U059A DC/DC CONVERTER “B” INVALID DATA

See also: Allison Transmission 3000/4000 series fault code list