What does code P24A5 mean?

Q: What does code P24A5 mean?

EGR Cooler Bypass Control Stuck Open Bank 1. P24A5 indicates that the powertrain control module (PCM) has detected the exhaust gas recirculation (EGR) cooler bypass valve stuck in the open position on bank 1. The PCM commands the bypass valve to close under certain conditions, but the valve position sensor or the PCM's rationality check shows the valve remains open, allowing exhaust gas to flow through the cooler when it should be bypassed.

DTC codes / P24xx · Auxiliary emission controls / P24A5

P24A5EGR Cooler Bypass Control Stuck Open Bank 1

P24A5 indicates that the powertrain control module (PCM) has detected the exhaust gas recirculation (EGR) cooler bypass valve stuck in the open position on bank 1. The PCM commands the bypass valve to close under certain conditions, but the valve position sensor or the PCM's rationality check shows the valve remains open, allowing exhaust gas to flow through the cooler when it should be bypassed.

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.