What does code P1619 mean?

Q: What does code P1619 mean?

Engine Oil Life Monitor Reset Circuit. P1619 on GM vehicles indicates that the engine control module (ECM) has detected a fault in the engine oil life monitor (OLM) reset circuit, which is the electrical path used to command the oil life monitor to reset after an oil change. The ECM expects a specific voltage or signal on the reset circuit when the ignition is on, and it sets this code when the signal is out of range, stuck, or missing entirely.

DTC codes / GM codes / P1619

P1619 · GMEngine Oil Life Monitor Reset Circuit

P1619 on GM vehicles indicates that the engine control module (ECM) has detected a fault in the engine oil life monitor (OLM) reset circuit, which is the electrical path used to command the oil life monitor to reset after an oil change. The ECM expects a specific voltage or signal on the reset circuit when the ignition is on, and it sets this code when the signal is out of range, stuck, or missing entirely.

SystemPowertrain

Code typeGM specific

SeverityLow

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.