What does code P269A mean?

Q: What does code P269A mean?

Exhaust Aftertreatment Fuel Injector A Circuit High. P269A indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the exhaust aftertreatment fuel injector labeled A, which is used to inject diesel fuel into the exhaust stream to raise temperature for the particulate filter. The high voltage reading typically means the circuit is open, shorted to power, or the injector coil is open, preventing proper regeneration and risking filter damage.

DTC codes / P26xx · Computer and output circuits / P269A

P269AExhaust Aftertreatment Fuel Injector A Circuit High

P269A indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the exhaust aftertreatment fuel injector labeled A, which is used to inject diesel fuel into the exhaust stream to raise temperature for the particulate filter. The high voltage reading typically means the circuit is open, shorted to power, or the injector coil is open, preventing proper regeneration and risking filter damage.

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.