What does code P24F1 mean?

Q: What does code P24F1 mean?

Control Module Wake-up Circuit High. P24F1 indicates that the engine control module (ECM) or another control module has detected an abnormally high voltage on the wake-up circuit that is used to rouse the module from a low-power sleep state. The circuit is typically a dedicated wire from the body control module (BCM) or ignition switch that signals the module to power up, and a high voltage reading means the module sees voltage present when it should be at or near ground, or a voltage level above the expected threshold during the wake-up event.

DTC codes / P24xx · Auxiliary emission controls / P24F1

P24F1Control Module Wake-up Circuit High

P24F1 indicates that the engine control module (ECM) or another control module has detected an abnormally high voltage on the wake-up circuit that is used to rouse the module from a low-power sleep state. The circuit is typically a dedicated wire from the body control module (BCM) or ignition switch that signals the module to power up, and a high voltage reading means the module sees voltage present when it should be at or near ground, or a voltage level above the expected threshold during the wake-up event.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.