P2EC0Turbocharger Compressor Outlet Temperature Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2EC0 reports that the compressor outlet temperature signal has fallen under the lowest valid voltage. Air temperature sensors on the intake side are usually NTC thermistors, as Bosch states for its combined boost pressure and temperature sensor; their resistance shrinks as they warm, so a signal pulled towards ground is read as extreme heat. A signal wire touching ground or a sensor shorted internally is the usual cause. With a PTC element the meaning would be reversed. No manufacturer documents P2EC0, so thresholds and timing are unknown. Section (e)(15.2.1) of California's 13 CCR 1968.2 has the low fault stored apart from the high one (P2EC1). In GM's patent US11060525 a faulty sensor switches the closed-loop boost reduction off.
- What you may notice
- Check engine lamp on
- Live data shows an implausibly hot charge air temperature
- Possible loss of power if a substitute value limits boost
- Likely causes
- LikelySignal wire shorted to ground, e.g. chafed on the charge pipe
- PossibleSensor shorted internally
- RareOil or moisture bridging the connector pins
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €60 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.