Powertrain
generic / SAE
P2554
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 54
Possible causes
- Inhibit wire shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–500 €
- Estimated time: 0.5–2 h
- Component: throttle inhibit a
- MIL / check engine light
Sources
References
sae:J2012