P2A58Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Here the signal of the vaporizer B outlet sensor rests at or near the reference voltage, so the module would see a deep-frozen unit. Typical reasons are an open wire, a plug that has backed out, a sensor element that has failed open or a short to a supply line. Telling a wiring fault from a real problem matters on gas engines: CA2862664C warns that coolant inside and next to an LNG heat exchanger may turn to ice during a cold start, and such a frozen vaporizer would also read very cold, though not at the electrical limit. The control unit therefore stops trusting vaporizer B, which can mean reduced gas delivery or a fall-back fuel. AC STAG calls the open case a missing sensor. No manufacturer documents P2A58.
- What you may notice
- Check engine light, depending on calibration
- Gas delivery reduced or fall-back fuel used
- Vaporizer B shown at an impossibly low temperature
- Likely causes
- LikelyOpen wire or plug of the B sensor backed out
- PossibleVaporizer B sensor element open
- RareSignal lead touching a supply line
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.