P2CACDC/DC Converter Temperature Sensor F Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2CAC flags DC/DC converter temperature sensor F as implausible although its signal is electrically valid. With six sensors in one converter the controller has plenty of reference values: after a cold soak all should read close to ambient, and during operation sensor F should rise and fall in step with the load on the part it watches. The Hyundai patent shows that converter software already evaluates temperature differences between sensors, there to tune the switching frequency. No manufacturer documents P2CAC publicly; FCA's Ram 1500 eTorque bulletin 08-037-21 only covers performance codes up to sensor D. CARB requires rationality checks for hybrid component temperature sensors. A sensor detached from its heat sink, drift or outdated software are typical. Sensor E uses P2CA8.
- What you may notice
- MIL on, sometimes after a single drive
- Sensor F reading out of line with the other converter temperatures
- Likely causes
- PossibleSensor F detached from its heat sink or measuring point
- PossibleSensor F drifting against the other converter sensors
- PossibleOutdated converter or hybrid control software
- RareUneven cooling of the converter, e.g. air in the coolant circuit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.