What does code P1670 mean?

Q: What does code P1670 mean?

Driver 4. P1670 on GM vehicles indicates that the powertrain control module (PCM) has detected a fault in the driver circuit for fuel injector number 4, which is part of the quad driver module that controls multiple injectors. The PCM monitors the electrical current through the injector driver and sets this code when the current falls outside the expected range, typically indicating an open circuit, short to ground, or a failed driver inside the PCM.

DTC codes / GM codes / P1670

P1670 · GMDriver 4

P1670 on GM vehicles indicates that the powertrain control module (PCM) has detected a fault in the driver circuit for fuel injector number 4, which is part of the quad driver module that controls multiple injectors. The PCM monitors the electrical current through the injector driver and sets this code when the current falls outside the expected range, typically indicating an open circuit, short to ground, or a failed driver inside the PCM.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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