DTC P1661 Cadillac
DEDICATED POWERTRAIN (D-PT) CAN BUS OFF
DEDICATED POWERTRAIN (D-PT) CAN BUS OFF
Description
The Electronic Shift Module (ESM) communicates with other controllers on the Controller Area Network (CAN) Dedicated Powertrain (DPT) bus. If the ESM looses communication with the other modules on the CAN DPT bus, a Loss of Communication or CAN bus Off Diagnostic Trouble Code (DTC) sets.
Cause and Solution
CAN DPT CIRCUIT OPEN CIRCUITCAN DPT CIRCUIT SHORTED TO GROUNDCAN DPT CIRCUIT SHORTED TO VOLTAGEOTHER CAN DPT MODULE SHORTED OR OPEN INTERNALLYELECTRONIC SHIFT CONTROL MODULE (ESM)
Video Guide
Diagnostic Info
- DTC Code: P1661
- Brand: Cadillac