DTC P1934: Vehicle Speed Signal

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DTC P1934: VEHICLE SPEED SIGNAL

Description:	Indicates the PCM detected an error in the vehicle speed information. Vehicle speed data is received from either the transmission control module (TCM) or the anti-lock brake system (ABS) control module. This DTC sets when the PCM detects a sudden loss of vehicle speed signal over a period of time.
Possible Causes:	VSS+ harness circuit open VSS- harness circuit open VSS harness circuit short to ground VSS harness circuit short to voltage Damaged drive mechanism for VSS Damaged VSS Damaged wheel speed sensors Damaged wheel speed sensor harness circuits
Diagnostic Aids:	Monitor the VSS PID while driving the vehicle. If vehicle speed data is lost, check the TCM or ABS control module for related DTCs.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
Manual Transmission	GO to PINPOINT TEST DP .
All others	The PCM uses information from the ABS module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs.