Powertrain
generic / SAE
P2552
Throttle/Fuel Inhibit A Circuit
General electrical fault on the throttle/fuel inhibit input A. This input lets external safety functions (immobilizer, hybrid HV interlock, anti-theft) override the throttle or cut fuel delivery. With the input invalid the safety override is unreliable, so the ECM falls back to its safe default — typically inhibit asserted to err on the side of safety.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 52
Possible causes
- Open or shorted inhibit wire high
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