P2B6ETurbocharger/Supercharger A Temperature Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2B6E is the general circuit code for temperature sensor A on the turbocharger or supercharger. SAE J2012 names the sensor but leaves its measuring point open, so the manufacturer decides what it watches, and no manufacturer documents this exact code publicly. The engine computer reports P2B6E when the signal is missing or implausible without being clearly low or clearly high, typically an intermittent open circuit or a corroded connector. CARB 13 CCR 1968.2 (e)(15) calls for circuit checks on powertrain input sensors and names turbocharger electronics among monitored parts. GM's patent US11060525B2 shows, using compressor outlet temperature, how such a value protects the charger by trimming boost and how a sensor fault disables that function. Out-of-range codes are P2B6F and P2B70; sensor B has P2B8F.
- What you may notice
- Warning lamp with stored code
- Implausible or jumping turbo temperature value in live data
- Likely causes
- LikelyCorroded or heat-damaged sensor connector
- PossibleIntermittent break in signal or ground wire
- PossibleTemperature sensor A failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.