What does code P20E3 mean?

Q: What does code P20E3 mean?

Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1). P20E3 indicates that the powertrain control module (PCM) has detected an implausible correlation between the exhaust gas temperature (EGT) sensor 1 and EGT sensor 3 on bank 1, meaning the two sensors are not reporting temperatures that agree within the expected range. The PCM compares their readings under specific operating conditions and sets this code when the difference exceeds a calibrated threshold for a set time.

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P20E3

P20E3Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1)

P20E3 indicates that the powertrain control module (PCM) has detected an implausible correlation between the exhaust gas temperature (EGT) sensor 1 and EGT sensor 3 on bank 1, meaning the two sensors are not reporting temperatures that agree within the expected range. The PCM compares their readings under specific operating conditions and sets this code when the difference exceeds a calibrated threshold for a set time.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary 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.