What does code P06EA mean?

Q: What does code P06EA mean?

NOx Sensor Processor Performance Bank 1 Sensor 1. P06EA indicates that the engine control module has detected a performance fault within the signal processing circuitry of the upstream nitrogen oxide (NOx) sensor on bank 1. The sensor itself may still produce a plausible reading, but the module's internal rationality checks for that sensor's processor have failed, meaning the reported NOx concentration cannot be trusted for emissions control.

DTC codes / P06xx · Computer and output circuits / P06EA

P06EANOx Sensor Processor Performance Bank 1 Sensor 1

P06EA indicates that the engine control module has detected a performance fault within the signal processing circuitry of the upstream nitrogen oxide (NOx) sensor on bank 1. The sensor itself may still produce a plausible reading, but the module's internal rationality checks for that sensor's processor have failed, meaning the reported NOx concentration cannot be trusted for emissions control.

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.