Diagnostic Trouble Code (DTC) index

DTC	Description	Possible Source	Action
P1637	CAN Engine Control Module (ECM) to Dynamic Stability Control Module (DSCCM) network malfunction	CAN open circuit fault; DSCCM to ECM CAN short circuit fault DSCCM power supply/ground fault DSCCM failure ECM failure	For open circuit tests, refer to Pinpoint Test A . For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . For power supply and ground tests, refer to Pinpoint Test E . Contact dealer technical support for advice on possible ECM/DSCCM failure.
P1638	CAN ECM to Instrument Cluster (IC) network malfunction	CAN open circuit fault; IC to ECM CAN short circuit fault IC failure ECM power supply/ground fault ECM failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . For ECM power supply/ground tests, refer to Electronic Engine Controls . Contact dealer technical support for advice on possible IC/ECM failure.
P1642	CAN circuit malfunction	CAN short circuit fault Control module failure; check for additional flagged DTCs to locate control module source	For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . Check for additional flagged DTCs, carry out pinpoint test for module indicated.
P1643	CAN ECM to Transmission Control Module (TCM) network malfunction	CAN open circuit fault; TCM to ECM CAN short circuit fault TCM power supply/ground fault TCM failure ECM failure	For open circuit tests, refer to Pinpoint Test A . For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For TCM power supply/ground tests, refer to Pinpoint Test F . Contact dealer technical support for advice on possible TCM/ECM failure.
P1696	CAN ECM to Adaptive Speed Control Module (ASCCM) network malfunction	CAN open circuit fault; ASCCM to ECM CAN short circuit fault ASCCM power supply/ground fault ASCCM failure ECM failure	For open circuit tests, refer to Pinpoint Test A . For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . For power supply/ground tests, refer to Pinpoint Test G . Contact dealer technical support for advice on possible ASCCM/ECM failure.
P1699	CAN ECM to A/CCM network malfunction	CAN open circuit fault; A/CCM to ECM CAN short circuit fault A/CCM power supply/ground fault A/CCM failure ECM failure	For open circuit tests, refer to Pinpoint Test A . for short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . For power supply/ground tests, refer to Pinpoint Test H . Contact dealer technical support for advice on possible A/CCM/ECM failure.
P1774	CAN TCM to linear switch module network malfunction	CAN open circuit fault; TCM to linear switch module CAN short circuit fault Linear switch module power supply/ground fault Linear switch module failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT . For linear switch module power supply/ground tests, refer to Pinpoint Test I . For linear switch module, refer to Automatic Transmission/Transaxle External Controls .
P1796	CAN network fault	CAN open circuit or short circuit fault TCM power/ground fault TCM/control valve failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For TCM power supply/ground tests, refer to Pinpoint Test F .. For TCM/control valve, refer to Automatic Transmission/Transaxle .
P1797	CAN TCM/ECM network malfunction	CAN open circuit fault; TCM to ECM CAN short circuit fault ECM failure TCM/control valve failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. Contact dealer technical support for advice on possible ECM failure. For TCM/control valve, refer to Automatic Transmission/Transaxle .
P1798	CAN TCM to IC network malfunction	CAN open circuit fault; TCM to IC CAN short circuit fault IC failure TCM/control valve failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For IC, refer to Instrument Cluster . For TCM/control valve, refer to Automatic Transmission/Transaxle .
P1799	CAN TCM to DSCCM network malfunction	CAN open circuit fault; TCM to DSCCM CAN short circuit fault DSCCM failure TCM/control valve failure	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For DSCCM, refer to Anti-Lock Control - Stability Assist . For TCM/control valve, refer to Automatic Transmission/Transaxle .
U1003 (PATS)	Standard Corporate Protocol (SCP) key status message; incorrect discrete identification number	Instrument cluster configuration error BPM SCP key status error	Reconfigure the IC, reprogram the keys
U1041 (CATS)	Vehicle speed signal from IC invalid	Vehicle speed circuit between IC and ADCM; open circuit, short circuit to ground, short circuit to B+, high resistance IC CAN network fault	For speed circuit tests, refer to Pinpoint Test J .. For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U1041 (BPM)	Vehicle speed SCP message invalid	IC to BPM SCP circuit; open circuit, short circuit to B+, short circuit to ground IC CAN network fault SCP network fault	For IC to BPM circuit tests, refer to Pinpoint Test K .. For CAN circuit tests, refer to Pinpoint Test A .. refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For SCP network tests, refer to Pinpoint Test C ..
U1041 (DDCM)	Vehicle speed SCP message invalid	IC to DDCM SCP circuit; open circuit, short circuit to B+, short circuit to ground IC CAN network fault SCP network fault	For IC to DDCM circuit tests, refer to Pinpoint Test L .. For CAN circuit tests, refer to Pinpoint Test A .. refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For SCP network tests, refer to Pinpoint Test C ..
U1041 (SLCM)	Vehicle speed SCP message invalid	IC to SLCM SCP circuit; open circuit, short circuit to B+, short circuit to ground IC CAN network fault SCP network fault	For IC to SLCM circuit tests, refer to Pinpoint Test M .. For CAN circuit tests, refer to Pinpoint Test A .. Refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT .. For SCP network tests, refer to Pinpoint Test C ..
U1135 (DDCM)	Ignition status (ignition switch position) not obtained	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1135 (DSCM)	Ignition status (ignition switch position) not obtained	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1135 (PDCM)	Ignition status (ignition switch position) not obtained	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1135 (PSCM)	Ignition status (ignition switch position) not obtained	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1135 (SLCM)	Ignition status (ignition switch position) not obtained	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1147 (PATS)	SCP key status message missing	Ignition switch to BPM switched ground circuit(s) fault BPM SCP key status error BPM SCP network fault SCP network fault	For ignition switched ground tests, refer to Pinpoint Test N .. For SCP network tests, refer to Pinpoint Test C ..
U1236 (A/CCM)	Control panel to A/CCM serial communication circuit fault	Control panel to A/CCM serial communication data input circuit; open circuit, short circuit to ground, short circuit to B+, high resistance Control panel failure	For data circuit tests, refer to Pinpoint Test O ..
U1260 (IC)	SCP + circuit failure	SCP + circuit; open circuit, short circuit to B +, short circuit to ground	For SCP network tests, refer to Pinpoint Test C ..
U1261 (IC)	SCP - circuit failure	SCP - circuit; open circuit, short circuit to B +, short circuit to ground	For SCP network tests, refer to Pinpoint Test C ..
U1262 (DHRCM)	SCP network circuit fault (ignition status [ignition switch position] periodically not obtained)	SCP network circuit; open circuit, short circuit to B +, short circuit to ground BPM SCP failure SCP network fault	For SCP network tests, refer to Pinpoint Test C ..
U1262 (PHRCM)	SCP network circuit fault (ignition status [ignition switch position] periodically not obtained)	SCP network circuit; open circuit, short circuit to B +, short circuit to ground BPM SCP failure SCP network fault	For SCP network tests, refer to Pinpoint Test C ..
U1264 (A/CCM)	Control panel to A/CCM serial communication circuit fault	Control panel to A/CCM serial communication data output circuit; open circuit, short circuit to ground, short circuit to B +, high resistance Control panel failure	For data circuit tests, refer to Pinpoint Test O ..
U1900 (IC)	CAN communications fault	CAN circuit; open circuit, short circuit to B +, short circuit to ground IC internal, CAN fault CAN network fault	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U1909 (DSCCM)	Local CAN (steering angle sensor, yaw rate and lateral acceleration sensor) communication fault	Local CAN circuit; open circuit, short circuit to B +, short circuit to ground DSCCM internal local CAN fault Local CAN fault	For local CAN circuit tests, refer to Pinpoint Test P ..
U2012 (BPM)	Key transponder module message corrupt	KTM to BPM data circuit; open circuit, short circuit to B +, short circuit to ground, high resistance Key transponder module failure	For KTM to BPM circuit tests, refer to Pinpoint Test Q ..
U2012 (DSCCM)	CAN communication fault	CAN circuit; open circuit, short circuit to B +, short circuit to ground DSCCM internal CAN fault CAN fault	For open circuit tests, refer to Pinpoint Test A .. For short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2202 (DSCCM)	CAN invalid configuration data received	ECM, TCM or DSCCM incorrectly configured	Reconfigure modules
U2510 (IC)	CAN challenge response error	Failed IC/ECM PATS challenge	Reconfigure the ECM and/or IC (incorrectly configured following replacement)
U2511 (IC)	Incorrect ECM CAN data received	"Engine start" remains disabled by ECM after receiving valid PATS data - ECM PATS error	Contact dealer technical support for advice on possible ECM failure
U2515 (DSCCM)	CAN adaptive speed control message missing	TCM CAN DTC flagged	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2515 (IC)	CAN adaptive speed control message missing	ASCCM CAN message missing	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2516 (ASCCM)	CAN TCM message missing	TCM CAN DTC flagged	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2520 (ASCCM)	CAN IC module missing	IC CAN circuit; open circuit, short circuit to B +, short circuit to ground IC CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2521 (ASCCM)	CAN DSCCM module missing	DSCCM CAN circuit; open circuit, short circuit to B +, short circuit to ground DSCCM CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2521 (IC)	CAN DSCCM message missing	DSCCM CAN DTC flagged	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2522 (ASCCM)	CAN TCM module missing	TCM CAN circuit; open circuit, short circuit to B +, short circuit to ground TCM CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2522 (DSCCM)	CAN TCM module missing	TCM CAN circuit; open circuit, short circuit to B +, short circuit to ground TCM CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2522 (IC)	CAN TCM message missing	TCM CAN DTC flagged	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2523 (ASCCM)	CAN ECM module missing	ECM CAN circuit; open circuit, short circuit to B +, short circuit to ground ECM CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2523 (DSCCM)	CAN ECM module missing	ECM CAN circuit; open circuit, short circuit to B +, short circuit to ground ECM CAN fault CAN fault	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2523 (IC)	CAN ECM message missing	ECM CAN DTC flagged	For CAN open circuit tests, refer to Pinpoint Test A .. For CAN short circuit tests, refer to Pinpoint Test B: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT ..
U2527 (DSCCM)	Local CAN (steering angle sensor, yaw rate and lateral acceleration sensor) transmit fault	Local CAN circuit; open circuit, short circuit to B +, short circuit to ground DSCCM internal local CAN fault Local CAN fault	For local CAN circuit tests, refer to Pinpoint Test P ..