What does code P218B mean?

Q: What does code P218B mean?

Throttle/Fuel Inhibit B Circuit. P218B indicates that the powertrain control module has detected a fault in the 'B' circuit of the throttle or fuel inhibit system, which is a safety strategy that cuts throttle response or fuel delivery under certain conditions. The computer monitors the electrical circuit for the inhibit actuator or its feedback and sets the code when the signal is out of range or inconsistent with commanded state.

DTC codes / P21xx · Fuel and air metering / P218B

P218BThrottle/Fuel Inhibit B Circuit

P218B indicates that the powertrain control module has detected a fault in the 'B' circuit of the throttle or fuel inhibit system, which is a safety strategy that cuts throttle response or fuel delivery under certain conditions. The computer monitors the electrical circuit for the inhibit actuator or its feedback and sets the code when the signal is out of range or inconsistent with commanded state.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.