PREVOST X3-45 VIP 2017 Owner's Manual page 207

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