Appendix C – Allison Diagnostic Troubleshooting Codes
194
DTC Description
CHECK
TRANS
Light
Inhibited Operation
Description
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)
P2813
Pressure Control Solenoid (PCS) 6 System Performance
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)
U0001 Hi Speed CAN Bus Reset Counter Overrun (IESCAN) No Use default values, inhibit SEM
U0010 CAN BUS Reset Counter Overrun No Use default values, inhibit SEM
U0100 Lost Communications with ECM/PCM (J1587) Yes Use default values
U0103
Lost Communication with Gear Shift Module
(Shift Selector) 1
Yes
Maintain range selected, observe
gear shift direction circuit
U0115 Lost Communication with ECM Yes Use default values
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) ID Yes Ignore shift selector inputs
U0333 Incompatible Gear Shift Module 2 (Shift Selector) ID 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
To Next Page