What does code P2499 mean?

Q: What does code P2499 mean?

EGR Cooler Bypass Position Sensor Circuit Low Bank 2. P2499 indicates that the powertrain control module has detected a low voltage signal from the exhaust gas recirculation cooler bypass position sensor on bank 2, which is the side of the engine that does not contain cylinder number one. The sensor normally reports the physical position of the bypass valve inside the EGR cooler, and a low signal means the circuit is grounded, shorted, or the sensor is failing to produce a valid voltage.

DTC codes / P24xx · Auxiliary emission controls / P2499

P2499EGR Cooler Bypass Position Sensor Circuit Low Bank 2

P2499 indicates that the powertrain control module has detected a low voltage signal from the exhaust gas recirculation cooler bypass position sensor on bank 2, which is the side of the engine that does not contain cylinder number one. The sensor normally reports the physical position of the bypass valve inside the EGR cooler, and a low signal means the circuit is grounded, shorted, or the sensor is failing to produce a valid voltage.

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.