P2570Direct Ozone Reduction Catalyst Temperature Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2570 is the high-side electrical fault of the sensor fitted to a DOR radiator, the ozone-converting coated radiator found on some low-emission petrol cars. VW's 2014 Tiguan book (2.0 L TSI, CCTA) logs it when LIN communication with the sensor breaks down because the line is interrupted or carries battery voltage; the 2014 CC book applies the same criterion to its CBFA and CCTA engines. A connector left unplugged after radiator work, a broken wire or a dead sensor are the usual reasons. VW Tech Tip 19-12-01 adds that a new radiator is delivered with this sensor loose, so it has to be glued on and connected. P2569 is the shorted-to-ground case. Cooling and driveability are unaffected; the MIL and inspection readiness are what matter.
- What you may notice
- Check engine light, often right after radiator work
- Engine runs and cools normally
- Likely causes
- LikelySensor not connected or not fitted after radiator replacement
- PossibleBroken LIN wire or loose terminal
- PossibleRadiator sensor 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: €20 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.