What does code P0544 mean?

Q: What does code P0544 mean?

Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 1). P0544 indicates that the powertrain control module (PCM) has detected an implausible signal or an out-of-range condition on the exhaust gas temperature (EGT) sensor circuit for bank 1 sensor 1, which is the sensor closest to the engine on the bank containing cylinder number one. The PCM monitors this sensor to protect the engine and emissions components from overheating, and it sets the code when the sensor voltage or resistance does not match expected values for the current operating conditions.

DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P0544

P0544Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 1)

P0544 indicates that the powertrain control module (PCM) has detected an implausible signal or an out-of-range condition on the exhaust gas temperature (EGT) sensor circuit for bank 1 sensor 1, which is the sensor closest to the engine on the bank containing cylinder number one. The PCM monitors this sensor to protect the engine and emissions components from overheating, and it sets the code when the sensor voltage or resistance does not match expected values for the current operating conditions.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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