C-10 Allison Transmission Other Features
PA-1628Operator's ManualH3-45 COACH
DIAGNOSTIC TROUBLESHOOTING CODES (DTC) LIST - ALLISON 5
TH
GENERATION
CONTROLS
DTC Description
CHECK
Light
Inhibited Operation
Description
C1312 Retarder Request Sensor Failed Low No
May inhibit retarder operation if
not using J1939 datalink
C1313 Retarder Request Sensor Failed High No
May inhibit retarder operation if
not using J1939 datalink
P0122 Pedal Position Sensor Circuit Low Voltage No
Use default throttle values.
Freezes shift adapts.
P0123 Pedal Position Sensor Circuit High Voltage No
Use default throttle values.
Freezes shift adapts.
P0218 Transmission Fluid Over Temperature Yes Use default sump temp
P0562 System Voltage Low No Inhibit TCC Operation, DNA
P0602 TCM Not Programmed Yes Lock in Neutral
P0604 Control module random access memory (RAM) Yes Lock in Neutral
P0614 Torque Control Data Mismatch ECM/TCM Yes
Allows operation only in reverse
and second range.
P0634 TCM Internal Temperature Too High Yes SOL OFF (hydraulic default)
P0642 Sensor Reference Voltage "A" Circuit Low Yes Default sensor data used
P0643 Sensor Reference Voltage "A" Circuit High Yes Default sensor data used
P0657 Actuator Supply Circuit Voltage 1 Open (HSD 1) Yes
SOL OFF, DNA, Inhibit TCC
operation, Inhibit main
modulation
P0658 Actuator Supply Voltage 1 (HSD1) Low Yes
DNS, SOL OFF (hydraulic
default)
P0659 Actuator Supply Voltage 1 (HSD1) High Yes
DNS, SOL OFF (hydraulic
default)
P0703 Brake Switch Circuit Malfunction No
No Neutral to Drive shifts for
refuse packer. TCM inhibits
retarder operation if a TPS code
is also active.
P0708 Transmission Range Sensor Circuit High Input Yes
Ignore defective strip selector
inputs
P070C Transmission Fluid Level Sensor Circuit – Low Input No None
P070D Transmission Fluid Level Sensor Circuit – High Input No None
P0712 Transmission Fluid Temperature Sensor Circuit Low Input Yes Use default sump temp
P0713 Transmission Fluid Temperature Sensor Circuit High Input Yes Use default sump temp
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