P2A5B
Alternative Fuel Vaporizer C Outlet Temperature Sensor Range/Performance
The outlet temperature signal of alternative fuel vaporizer C does not match plausibility checks against fuel rail temperature and engine coolant temperature. Sensor drift.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Sensor characteristic driftedCommon
- Sensor mounting displaced from fluid pathPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Alt Fuel Vaporizer C Outlet Temp Sensor
- Wiring Harness
- Afcm
P2A5B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.