What does code P25BD mean?

Q: What does code P25BD mean?

Unmetered Fuel - Forced Engine Shutdown. P25BD indicates the engine control module (ECM) has commanded a forced engine shutdown because it detected fuel being delivered to the engine that was not accounted for by the fuel metering system. The ECM monitors fuel injector pulse width, fuel rail pressure, and calculated fuel consumption; when the actual fuel delivery exceeds the commanded amount beyond a calibrated threshold, it triggers this code and may cut fuel or spark to protect the engine and emissions system.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25BD

P25BDUnmetered Fuel - Forced Engine Shutdown

P25BD indicates the engine control module (ECM) has commanded a forced engine shutdown because it detected fuel being delivered to the engine that was not accounted for by the fuel metering system. The ECM monitors fuel injector pulse width, fuel rail pressure, and calculated fuel consumption; when the actual fuel delivery exceeds the commanded amount beyond a calibrated threshold, it triggers this code and may cut fuel or spark to protect the engine and emissions system.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

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.