DTC P1640: Powertrain DTCS Available In Another Module
P1640 - POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
| Description: Vehicles using a secondary engine control module can request that the PCM illuminate the malfunction indicator lamp (MIL) when a failure occurs which affects emissions. | |||
| Possible Causes: | |||
| Diagnostic Aids: DTCs stored in a secondary module, which requested the MIL to be turned on. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||