What does code P2481 mean?

Q: What does code P2481 mean?

Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5. P2481 means the engine control module (ECM) has detected an abnormally low voltage on the exhaust gas temperature (EGT) sensor circuit for bank 1 sensor 5, which is typically a post-catalyst or downstream sensor on that bank. The ECM expects the sensor signal voltage to stay within a calibrated range, and a sustained low reading tells the module that the circuit is shorted to ground, the sensor has failed, or the wiring is damaged.

DTC codes / P24xx · Auxiliary emission controls / P2481

P2481Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5

P2481 means the engine control module (ECM) has detected an abnormally low voltage on the exhaust gas temperature (EGT) sensor circuit for bank 1 sensor 5, which is typically a post-catalyst or downstream sensor on that bank. The ECM expects the sensor signal voltage to stay within a calibrated range, and a sustained low reading tells the module that the circuit is shorted to ground, the sensor has failed, or the wiring is damaged.

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.