P0E5ADC/DC Converter Temperature Sensor C Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0E5A means the voltage from DC/DC converter temperature sensor C has fallen below its valid window. With the NTC thermistors common in power electronics, a low voltage translates into an implausibly hot reading, so a grounded signal wire or a failed sensor is far more likely than genuine overheating. No manufacturer documents P0E5A publicly. Ford gives an idea of the window for its sensor C, the inductor sensor of the boost converter: anything under 0.067 V counts as a fault, but Ford stores it as P0E59, not as P0E5A. CARB requires out-of-range monitoring of hybrid input components. Because the controller must assume overtemperature, it usually derates the converter at once, which can reduce electric power. The high-signal counterpart is P0E5B.
- What you may notice
- Hybrid system warning
- Converter derated, reduced electric power
- Likely causes
- LikelySensor signal shorted to ground
- PossibleThermistor internally shorted
- RareEvaluation circuit in the converter faulty
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.