P2A31Alternative Fuel Tank Shutoff Valve E Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2A31 closes the shutoff valve series with the high fault on valve E: the module measures voltage on the control wire where none should be. TransEco names a short to power and lights the MIL while the gas system continues; it prints P2A21 beside the code. Ford's Boss 302S list includes P2A31 without a MIL marker. In operation this can mean that cylinder E keeps supplying gas when the module wants it locked, for example after the inertia switch has tripped, the device through which Ford cut gas on its 2003 bi-fuel CNG vehicles. In the J2012 range the AFCM power relay codes follow from P2A32 onwards. P2A30 is the low-side code for the same valve, P2A2D the high fault on valve D.
- What you may notice
- Check engine light
- Cylinder E not locked when it should be
- Likely causes
- LikelyValve E wire shorted to a voltage source
- PossibleDriver for valve E in the module stuck on
- RareValve E fed from a wrong circuit after an upfit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.