DTC P1640: Powertrain DTCS Available In Another Module
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
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. | ||