Throttle/Fuel Inhibit A Circuit High
Throttle/fuel inhibit A reads stuck high — short to battery voltage. ECM cannot read the inhibit state and falls back to the safe default.
Affected components
- Throttle inhibit a
Common causes
- High likelihood: Inhibit wire shorted to battery voltage
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Supply wire pinched against B+ source
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.