What does code P2691 mean?

Q: What does code P2691 mean?

Cylinder 6 Injector Data Incompatible. P2691 is a generic powertrain code that means the engine control module (ECM) has detected incompatible data for cylinder 6's fuel injector, typically from a calibration mismatch or corrupted injector coding. The ECM compares the injector's programmed characteristics against expected values and sets this code when the data does not match the vehicle's configuration.

DTC codes / P26xx · Computer and output circuits / P2691

P2691Cylinder 6 Injector Data Incompatible

P2691 is a generic powertrain code that means the engine control module (ECM) has detected incompatible data for cylinder 6's fuel injector, typically from a calibration mismatch or corrupted injector coding. The ECM compares the injector's programmed characteristics against expected values and sets this code when the data does not match the vehicle's configuration.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.