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DTC codes / P06xx · Computer and output circuits / P06CA

P06CACylinder 6 Glow Plug Incorrect

P06CA indicates that the engine control module (ECM) has detected an incorrect electrical condition in the glow plug circuit for cylinder 6, typically an open circuit, short to ground, or short to power. The ECM monitors glow plug current and voltage during the afterglow phase and sets this code when the feedback signal does not match the expected value 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.

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