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
Mike Craven (Wednesday, 24 November 2021 19:34)
Have a p2669 code.
Actuator supply circuit voltage 2 open (HSD2)
JUDAS WALLENY (Friday, 09 April 2021 03:05)
LOOKING FOR HINTS ON WHAT WOULD CAUSE PO847 FLUID PRESSURE SWITCH LOW
Jerry Reynolds (Monday, 30 November 2020 17:17)
Looking for troubleshooting information on Code P0720