What does code P1679 mean?

Q: What does code P1679 mean?

Drive By Wire MIL Circuit Open Circuit. P1679 on Volkswagen vehicles indicates that the engine control module has detected an open circuit in the wiring for the malfunction indicator lamp (MIL) circuit, which is part of the drive-by-wire system. The computer expects a certain voltage or current on the MIL control circuit but sees none, meaning the circuit is broken somewhere between the ECM and the instrument cluster or the lamp itself.

DTC codes / Volkswagen codes / P1679

P1679 · VolkswagenDrive By Wire MIL Circuit Open Circuit

P1679 on Volkswagen vehicles indicates that the engine control module has detected an open circuit in the wiring for the malfunction indicator lamp (MIL) circuit, which is part of the drive-by-wire system. The computer expects a certain voltage or current on the MIL control circuit but sees none, meaning the circuit is broken somewhere between the ECM and the instrument cluster or the lamp itself.

SystemPowertrain

Code typeVolkswagen specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.