P2571Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2571 stands for an unsteady or intermittently lost signal from the temperature sensor of a direct ozone reduction (DOR) catalyst. Unlike P2569 and P2570, which describe a lasting low or high fault, this code covers readings that jump around or vanish for moments. No manufacturer publicly documents P2571; the VW specification books that use this sensor family list only P2568 to P2570. On the VW 2.0 L TSI the part is the radiator identification sensor G611, which a VW Tech Tip says is bonded to the radiator, so a sensor that has come loose or a corroded plug is a plausible cause. CARB requires DOR systems to be monitored, and BASF's PremAir coating is the best-known DOR catalyst. Driving is unaffected.
- What you may notice
- Check engine light that may come and go
- No noticeable effect on driving or cooling
- Likely causes
- LikelyLoose or corroded terminal at the radiator sensor plug
- PossibleSensor no longer firmly bonded to the radiator
- PossibleHarness damaged by vibration at the radiator mounting
- 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: €30 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.