P1640 OBD Trouble Code
1 result found
| Type | Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled |
|---|---|
| Description | PCM Trouble Codes Available in Another Module Conditions |
| Cause | Key on or engine running and the PCM received a request from another module to illuminate the MIL due to a fault that could affect emissions Scan Tool Tips Request PID 0946 to determine which module failed |
Try also: https://www.obd-codes.com/p1640
