PREVOST X3-45 VIP 2015, Owner'S Manual

Page: 188 / 190

Appendix C – Allison Diagnostic Troubleshooting Codes 12
DTC Description
CHECK
Light
Inhibited Operation
Description
P2730 Pressure Control Solenoid 1 (PCS1) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
P2736 Pressure Control Solenoid 5 (PCS5) Control Circuit Open Yes Inhibit retarder operation
P2738 Pressure Control Solenoid 5 (PCS5) Control Circuit Low Yes
Allow 2 through 6, N, R. Inhibit
retarder and TCC operation
P2739 Pressure Control Solenoid 5 (PCS5) Control Circuit High Yes Inhibit retarder operation
P273F
Retarder Oil Temperature Sensor Over Temperature
Condition
No None
P2742 Retarder Oil Temperature Sensor Circuit – Low No Use default retarder temp values
P2743 Retarder Oil Temperature Sensor Circuit – High No Use default retarder temp values
P2761 TCC PCS Control Circuit Open Yes Inhibit TCC operation
P2763 TCC PCS Control Circuit High Yes Inhibit TCC operation
P2764 TCC PCS Control Circuit Low Yes
7-speed: Allow 2 through 6, N, R.
Inhibit TCC operation
P2789
Transmission Clutch Life Expired (Clutch Adaptive
Learning at Limit)
No None
P2793 Gear Shift Direction Circuit Yes
Ignores PWM input from shift
selector
P2808 Pressure Control Solenoid 6 (PCS6) Stuck Off Yes DNS, RPR
P2809 Pressure Control Solenoid 6 (PCS6) Stuck On Yes DNS, RPR
P2812 Pressure Control Solenoid 6 (PCS6) Control Circuit Open Yes DNS, SOL OFF (hydraulic default)
P2814 Pressure Control Solenoid 6 (PCS6) Control Circuit Low Yes DNS, SOL OFF (hydraulic default)
P2815 Pressure Control Solenoid 6 (PCS6) Control Circuit High Yes DNS, SOL OFF (hydraulic default)
U0073 CAN Communication Bus 1 Off No Use default values
U0074 CAN Communication Bus 2 Off No Use default values
U0100 Lost Communications with ECM A Yes Use default values
U0103
Lost Communication with Gear Shift Module (Shift
Selector) 1
Yes
Maintain range selected, observe
gear shift direction circuit
U0291
Lost Communication with Gear Shift Module (Shift
Selector) 2
Yes
Maintain range selected, observe
gear shift direction circuit
U0304 Incompatible Gear Shift Module 1 (Shift Selector) Yes Ignore shift selector inputs
U0333 Incompatible Gear Shift Module 2 (Shift Selector) Yes Ignore shift selector inputs
U0404
Invalid Data Received From Gear Shift Module (Shift
Selector) 1
Yes
Maintain range selected, observe
gear shift direction circuit
U0592
Invalid Data Received From Gear Shift Module (Shift
Selector) 2
Yes
Maintain range selected, observe
gear shift direction circuit