PREVOST X3-45 VIP 2017, Owner'S Manual

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Appendix C
– Allison Diagnostic Troubleshooting Codes
11
DTC Description
CHECK
Light
Inhibited Operation
Description
P0960 Main Pressure Modulator Solenoid Control Circuit Open Yes None
P0962 Main Pressure Modulator Solenoid Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P0963 Main Pressure Modulator Solenoid Control Circuit High Yes None
P0964 Pressure Control Solenoid 2 (PCS2) Control Circuit Open Yes DNS, SOL OFF (hydraulic default)
P0966 Pressure Control Solenoid 2 (PCS2) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P0967 Pressure Control Solenoid 2 (PCS2) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
P0968 Pressure Control Solenoid 3 (PCS3) Control Circuit Open Yes DNS, SOL OFF (hydraulic default)
P0970 Pressure Control Solenoid 3 (PCS3) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P0971 Pressure Control Solenoid 3 (PCS3) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
P0973 Shift Solenoid 1 (SS1) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P0974 Shift Solenoid 1 (SS1) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
P0976 Shift Solenoid 2 (SS2) Control Circuit Low Yes
7-speed: Allow 2 through 6, N, R
Inhibit TCC operation
P0977 Shift Solenoid 2 (SS2) Control Circuit High Yes 7-speed: Allow 2 through 6, N, R
P097A Shift Solenoid 1 (SS1) Control Circuit Open Yes Lock in range
P097B Shift Solenoid 2 (SS2) Control Circuit Open Yes 7-speed: Allow 2 through 6, N, R
P0989 Retarder Pressure Sensor Circuit Low No None
P0990 Retarder Pressure Sensor Circuit High No None
P1739 Incorrect Low Gear Ratio Yes
Command 2
nd
and allow shifts 2
through 6, N, R
P1790 Gear Shift Module 1 Calibrated Invalid Yes
Shift selector language or units
incorrect
P1791 Gear Shift Module 2 Calibrated Invalid Yes
Shift selector language or units
incorrect
P1891 Throttle Position Sensor PWM Signal Low No Use default throttle values
P1892 Throttle Position Sensor PWM Signal High No Use default throttle values
P2184 Engine Coolant Temperature Sensor 2 Circuit Low Input No Use default engine coolant values
P2185 Engine Coolant Temperature Sensor 2 Circuit High Input No Use default engine coolant values
P2637 Torque Management Feedback Signal (A) Yes Inhibit SEM
P2641 Torque Management Feedback Signal (B) Yes Inhibit LRTP
P2669 Actuator Supply Circuit Voltage 2 Open (HSD2) Yes
SOL OFF, Inhibit TCC operation,
Inhibit Main modulation, ONA
P2670 Actuator Supply Voltage 2 (HSD2) Low Yes DNS, SOL OFF (hydraulic default)
P2671 Actuator Supply Voltage 2 (HSD2) High Yes DNS, SOL OFF (hydraulic default)
P2684 Actuator Supply Circuit Voltage 3 Open (HSD3) Yes
SOL OFF, Inhibit TCC operation,
Inhibit Main modulation, ONA
P2685 Actuator Supply Voltage 3 (HSD3) Low Yes DNS, SOL OFF (hydraulic default)
P2686 Actuator Supply Voltage 3 (HSD3) High Yes DNS, SOL OFF (hydraulic default)
P2714 Pressure Control Solenoid 4 (PCS4) Stuck Off Yes DNS, RPR
P2715 Pressure Control Solenoid 4 (PCS4) Stuck On Yes DNS, SOL OFF (hydraulic default)
P2718 Pressure Control Solenoid 4 (PCS4) Control Circuit Open Yes DNS, SOL OFF (hydraulic default)
P2720 Pressure Control Solenoid 4 (PCS4) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P2721 Pressure Control Solenoid 4 (PCS4) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
P2723 Pressure Control Solenoid 1 (PCS1) Stuck Off Yes DNS, RPR
P2724 Pressure Control Solenoid 1 (PCS1) Stuck On Yes DNS, RPR
P2727 Pressure Control Solenoid 1 (PCS1) Control Circuit Open Yes DNS, SOL OFF (hydraulic default)
P2729 Pressure Control Solenoid 1 (PCS1) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)