P2A5DAlternative Fuel Vaporizer C 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
- P2A5D says the vaporizer C sensor signal is stuck high, near the reference voltage, which reads as extreme cold. An interrupted wire, a disconnected or corroded plug, an open sensor or a short to battery voltage are the candidates. Gas controllers that use vaporizer temperature as a release condition, as AC STAG does before switching to gas, will hold off gas mode when they see such a value. With two other vaporizers still reporting, a control unit might be calibrated to carry on without C at reduced output, but no manufacturer documents P2A5D or its reaction. TransEco's analogous rail temperature High code names an open sensor or short to power. Measure resistance at the sensor and compare it with the coolant temperature.
- What you may notice
- Check engine light, depending on calibration
- Gas mode held back or output reduced
- Vaporizer C shown at extreme cold
- Likely causes
- LikelyWire to sensor C interrupted or plug disconnected
- PossibleSensor C open inside
- RareSignal lead shorted to battery voltage
- 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.