What does code P066E mean?

Q: What does code P066E mean?

Cylinder 3 Glow Plug Control Circuit Low. P066E means the engine control module (ECM) has detected that the electrical circuit for the cylinder 3 glow plug is drawing less current than expected, which indicates a low-current or open-circuit condition. The ECM monitors glow plug operation during the afterglow phase and sets this code when the measured current falls below the calibrated threshold for that cylinder.

DTC codes / P06xx · Computer and output circuits / P066E

P066ECylinder 3 Glow Plug Control Circuit Low

P066E means the engine control module (ECM) has detected that the electrical circuit for the cylinder 3 glow plug is drawing less current than expected, which indicates a low-current or open-circuit condition. The ECM monitors glow plug operation during the afterglow phase and sets this code when the measured current falls below the calibrated threshold for that cylinder.

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.