P2A95Alternative Fuel Tank Select Valve B Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2A95 says the module finds no proper current path through tank select valve B. Where a second select valve exists, it typically serves the next vessel or supply in line. Cespira's patent for a gas engine fed from two compressed-gas supplies shows how much depends on such valves: the controller connects each supply either to a compressor or to the regulator, and only by switching can it keep using a supply whose pressure has dropped. With valve B dead, that step is missing and fuel held in the affected vessel is effectively stranded. Unlike P2A22, which concerns the shutoff solenoid on tank B, this code concerns the routing valve. No manufacturer documents P2A95. A broken lead, a loose plug or an open coil are the usual findings.
- What you may notice
- Malfunction lamp on
- Content of one vessel cannot be used
- Range well below the usual figure
- Likely causes
- LikelyLoose plug or broken wire to select valve B
- PossibleOpen solenoid coil of valve B
- RareOutput stage for valve B in the module defective
- 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: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.