What does code P069B mean?

Q: What does code P069B mean?

Cylinder 9 Glow Plug Control Circuit High. P069B is a generic powertrain code indicating that the engine control module (ECM) has detected a high-voltage condition on the glow plug control circuit for cylinder 9. The ECM monitors the circuit and expects a certain voltage drop when the glow plug is commanded on; a reading above the expected threshold triggers this code.

DTC codes / P06xx · Computer and output circuits / P069B

P069BCylinder 9 Glow Plug Control Circuit High

P069B is a generic powertrain code indicating that the engine control module (ECM) has detected a high-voltage condition on the glow plug control circuit for cylinder 9. The ECM monitors the circuit and expects a certain voltage drop when the glow plug is commanded on; a reading above the expected threshold triggers this code.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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