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DTC P1686: No Skim Bus Message Received: Description

Smart Key Immobilizer Module (SKIM) bus is monitored with ignition on and continuously during engine operation. DTC will set in Powertrain Control Module (PCM) memory when SKIM status bus message was not received from the SKIM for 20 seconds. Possible causes for DTC to set are: invalid SKIM KEY, defective PCM, defective connector or defective wiring.