DTC Chart - PCM

WARNING: This page is about a different variant/trim than selected.

DTC	Description	Action
P073D	Unable to Engage Neutral	The shift by wire system commanded Neutral. After a period of time the TR sensor is valid but does not indicate Neutral. The wrench light illuminates and a Shift System Fault message is displayed in the message center. The engine does Not Crank if stuck in reverse or drive. No Forward if stuck in park or reverse or No Reverse if stuck in park or drive. The ePRNDL stays on and can drain the battery if the system is stuck in a non-park position. CHECK for TRCM system voltage low or TRCM motor DTCs. CHECK for shift cable bound, pinched or mis-routed. REFER to: Selector Lever Cable . PERFORM a network test. If CANDTCs are present, follow the diagnostic procedure for those DTCs.
P073E	Unable to Engage Reverse	The shift by wire system commanded Reverse. After a period of time the TR sensor is valid but does not indicate Reverse. The wrench light illuminates and a Shift System Fault message is displayed in the message center. The engine does Not Crank if stuck in drive. No reverse engagement. The ePRNDL stays on and can drain the battery if the system is stuck in a non-park position. CHECK for TRCM system voltage low or TRCM motor DTCs. CHECK for shift cable bound, pinched or mis-routed. REFER to: Selector Lever Cable . PERFORM a network test. If CANDTCs are present, follow the diagnostic procedure for those DTCs.
P07E4	Unable to Engage Park	The shift by wire system commanded Park. After a period of time the TR sensor is valid but does not indicate Park. The wrench light illuminates and a Shift System Fault message is displayed in the message center. If the transmission is stuck in Drive or Reverse the engine does Not Crank and the EPB applies when park is selected without operator requesting EPB. (Default to Park may also be triggered). CHECK for TRCM system voltage low or TRCM motor DTCs. CHECK for selector lever cable bound, pinched or mis-routed. REFER to: Selector Lever Cable . PERFORM a network test. If CANDTCs are present, follow the diagnostic procedure for those DTCs.
P07E5	Unable to Engage Drive	The shift by wire system commanded Drive. After a period of time the TR sensor is valid but does not indicate Drive. The wrench light illuminates and a Shift System Fault message is displayed in the message center. Possible engine No Crank condition. No drive engagement. CHECK for TRCM system voltage low or TRCM motor DTCs. CHECK for shift cable bound, pinched or mis-routed. REFER to: Selector Lever Cable . PERFORM a network test. If CANDTCs) are present, follow the diagnostic procedure for those DTCs. REFER to: Communications Network .
P0815	Upshift Switch Circuit	GO to Pinpoint Test A
P0816	Downshift Switch Circuit	GO to Pinpoint Test A
P085D	Gear Shift Control Module "A" Performance	This DTC alone indicates an issue with the redundant communication wire between the GSM and PCM. Perform the network test. If DTC P085D returns, GO to Pinpoint Test H
P0861	Gear Shift Control Module "A" Communication Circuit Low	This DTC alone indicates an issue with the redundant communication wire between the GSM and PCM. Perform the network test. If DTC P861 returns, GO to Pinpoint Test H
P0862	Gear Shift Control Module "A" Communication Circuit High	This DTC alone indicates an issue with the redundant communication wire between the GSM and PCM. Perform the network test. If DTC P861 returns, GO to Pinpoint Test H
P175B	TRCM Shift Cable Disconnected / Misadjusted	The reported TR sensor position differs from the reported position from the TRCM. The wrench light illuminates and a Shift System Fault is displayed. REFER to: Selector Lever Cable Adjustment .
P177F	Unable To Fully Engage Neutral	May set with P0752, P0757, P0762 and/or P0767. CLEAR the DTC, if the DTC returns, REFER to: Diagnosis By Symptom .
U0103	Lost Communication With Gear Shift Control Module A	CLEAR the DTC. PERFORM a GWM network test. If GWMDTCs return, REFER to: Communications Network . Otherwise if DTC U0103 returns, GO to Pinpoint Test J
U019E	Lost Communication With Transmission Range Control Module	If DTC P07F5, U101E and/or U101F are present, diagnose those DTCs first. If DTC DTC U019E is the only DTC present, GO to Pinpoint Test O
U0404	Invalid Data Received from Gear Shift Control Module "A"	This DTC indicates the PCM is able to receive GSMCAN messages but the GSM is indicating a fault on one or more of the data signals the PCM uses for function. Using the diagnostic scan tool, retrieve GSMDTCs. REFER to DTC Chart - GSM and follow the GSM repair procedures.
U049F	Invalid Data Received From Transmission Range Control Module	This DTC indicates the PCM is able to receive TRCMCAN messages but the TRCM is indicating a fault on one or more of the data signals the GSM uses for function. Using the diagnostic scan tool, retrieve TRCMDTCs. REFER to DTC Chart - TRCM and follow the TRCM repair procedures.
U101E	Invalid Internal Control Module Monitoring Data Received from Gear Shift Module	CLEAR the DTC. PERFORM a GWM network test. If GWMDTCs return, REFER to: Communications Network . If PCMDTCs return, Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) . If DTC U101E returns, REPROGRAM the original GSM. REFER to: Module Configuration - System Operation and Component Description .
U101F	Invalid Internal Control Module Monitoring Data Received from Transmission Range Control Module	CLEAR the DTC. PERFORM a GWM network test. If GWMDTCs return, REFER to: Communications Network . If PCMDTCs return, Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) . If DTC U101F returns, REPROGRAM the original TRCM. REFER to: Module Configuration - System Operation and Component Description .