What does code P046D mean?

Q: What does code P046D mean?

EGR Sensor A Circuit Intermittent/Erratic. P046D means the powertrain control module (PCM) has detected an intermittent or erratic signal from the exhaust gas recirculation (EGR) sensor A circuit, which monitors EGR valve position or flow. The PCM expects a steady, predictable voltage or frequency from this sensor, and the signal is dropping out or jumping around outside normal limits.

DTC codes / P04xx · Auxiliary emission controls / P046D

P046DEGR Sensor A Circuit Intermittent/Erratic

P046D means the powertrain control module (PCM) has detected an intermittent or erratic signal from the exhaust gas recirculation (EGR) sensor A circuit, which monitors EGR valve position or flow. The PCM expects a steady, predictable voltage or frequency from this sensor, and the signal is dropping out or jumping around outside normal limits.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.