Alternative Fuel Tank Select Valve B Control Circuit Performance
The control circuit of alternative fuel tank select valve B reports a control performance condition. Tank selection on multi-tank CNG/LPG systems cannot be commanded reliably.
Affected components
- Alt fuel tank select valve b
- Wiring harness
- Afcm
Common causes
- High likelihood: Valve stuck in last commanded position
- Medium likelihood: Coil force degraded
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.