Controls and Operating
3-48
Fault Code Meaning of Code / Possible Cause of Fault
P0989 Retarder Pressure Sensor Failed Low
P0990 Retarder Pressure Senosr Failed High
P1739 Incorrect Low Gear Ratio
P1891 Throttle Position Sensor PWM Signal Low Input
P1892 Throttle Position Sensor PWM Signal High Input
P2184 Engine Coolant Temperature Sensor Circuit Low Input
P2185 Engine Coolant Temperature Sensor Circuit High Input
P2637 Torque Management Feedback Signal (SEM)
P2641 Torque Management Feedback Signal (LRTP)
P2670 Actuator Supply Voltage 2 (HSD2) Low
P2671 Actuator Supply Voltage 2 (HSD2) High
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
P2730 Pressure Control Solenoid 1 (PCS1) Control Circuit High
P2736 Pressure Control Solenoid 5 (PCS5) Control Circuit Open
P2738 Pressure Control Solenoid 5 (PCS5) Control Circuit Low
P2739 Pressure Control Solenoid 5 (PCS5) Control Circuit High
P2740 Retarder Oil Temperature Hot
P2742 Retarder Oil Temperature Sensor Circuit—Low Input
P2743 Retarder Oil Temperature Sensor Circuit—High Input
P2761 TCC PCS Control Circuit Open
P2763 TCC PCS Control Circuit High
P2764 TCC PCS Control Circuit Low
P278A Kickdown Input Failed ON
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