Throttle/Fuel Inhibit A Circuit Low
Throttle/fuel inhibit A reads stuck low — short to ground or permanently asserted. ECM may treat it as continuous inhibit and refuse normal operation.
Affected components
- Throttle inhibit a
Common causes
- High likelihood: Inhibit wire shorted to ground
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Harness chafing through insulation
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.