P2570 code meaning
Direct Ozone Reduction Catalyst Temperature Sensor Circuit High
Powertrain system Generic code P25xx codes Check engine light
What P2570 means
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 gasoline 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.
P2570 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2570
- Check engine light, often right after radiator work
- Engine runs and cools normally
Common causes of P2570
- Most likelySensor not connected or not fitted after radiator replacement
- PossibleBroken LIN wire or loose terminal
- PossibleRadiator sensor failed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Dor temperature sensorSensor wiring
What each part of P2570 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 70 | The exact fault in that area. |
What to do next
- Note P2570 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2570
What does P2570 mean?
P2570 means "Direct Ozone Reduction Catalyst Temperature Sensor Circuit High". 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 gasoline cars. It is a generic code, so it means the same on every make.
Is it safe to drive with P2570?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2570 fail an emissions test?
Yes, it can. P2570 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2570 to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will P2570 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.