P2C8FDC/DC Converter Temperature Sensor D 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
- P2C8F stands for a sensor D signal stuck above the upper edge of its permitted range. With a thermistor fed through a pull-up resistor, the voltage climbs towards the reference as soon as the loop is broken, so an unplugged connector, a cracked wire or a corroded pin is the classic finding; a short to a supply voltage gives the same picture. The resulting reading would be a converter colder than any real ambient. No manufacturer documents P2C8F publicly; FCA shows sensor D on the 2021 Ram 1500 eTorque but lists only P2C8D for it. CARB requires range monitoring of hybrid input components. Because a false cold value could hide real overheating, the controller treats the temperature as unknown and usually limits power. P2C8E is the low-signal counterpart.
- What you may notice
- Hybrid system warning, MIL possible
- Electrical power limited as a precaution
- Likely causes
- LikelyConnector unplugged or sensor wire broken
- PossibleCorroded or pushed-back pin at the converter connector
- RareSignal shorted to a supply voltage
- 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: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.