DTC P1640: Powertrain DTCS Available In Another Module
DTC P1640: POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
| Description: | Vehicles using a secondary engine control module can request 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 appropriate Description article, Possible Causes and Diagnostic Aids for the DTC. | ||