OBD-II code · Powertrain (generic, extended)
P2A24 Alternative Fuel Tank Shutoff Valve B Control Circuit Low
The control circuit of alternative fuel tank shutoff valve B reports a control circuit low condition. Tank isolation cannot be commanded as expected on multi-tank CNG/LPG systems.
Is it safe to drive with P2A24?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to ground
- PossibleInternal short in valve coil
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Tank Shutoff Valve B, Wiring Harness, Afcm
Related codes
- P224EAlternative Fuel Tank Shutoff Valve A Control Circuit Low
- P2A28Alternative Fuel Tank Shutoff Valve C Control Circuit Low
- P2A2CAlternative Fuel Tank Shutoff Valve D Control Circuit Low
- P2A30Alternative Fuel Tank Shutoff Valve E Control Circuit Low
- P2A21Injection Pump Fuel Metering Control F High (Cam/Rotor/Injector)
- P2A22Alternative Fuel Tank Shutoff Valve B Control Circuit/Open
- P2A23Alternative Fuel Tank Shutoff Valve B Control Circuit Performance/Stuck Off
- P2A25Alternative Fuel Tank Shutoff Valve B Control Circuit High
- P2A26Alternative Fuel Tank Shutoff Valve C Control Circuit/Open
- P2A27Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.