P2568 code meaning
Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/Performance
Powertrain system Generic code P25xx codes Check engine light
What P2568 means
P2568 is the plausibility check of the sensor on a direct ozone reduction (DOR) radiator, whose coating converts ozone in the cooling air. VW's 2014 specification books for the CC and Tiguan set it on a failed ID check or a failed functional check of the temperature sensor. VW Tech Tip 19-12-01 explains that on 2009-2015 Eos, Jetta, GTI, Passat and Tiguan with the 2.0 L TSI (CCTA, CBFA) this code refers to the radiator identification sensor G611; a new radiator comes with the sensor packed separately, to be bonded on. A non-coated aftermarket radiator or an unbonded sensor therefore triggers P2568. P2569/P2570 are LIN electrical faults, P2567 the general circuit fault. CARB section (e)(14) requires DOR monitoring.
P2568 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P2568
- Check engine light, often after a radiator replacement
- No change in driveability or engine cooling
- Possible failed emissions inspection
Common causes of P2568
- Most likelyAftermarket radiator without ozone coating or without the identification sensor
- PossibleIdentification sensor not bonded after radiator replacement
- PossibleIdentification/temperature sensor failed its self-test
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Dor temperature sensorRadiatorLin bus
What each part of P2568 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. |
| 68 | The exact fault in that area. |
What to do next
- Note P2568 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 P2568
What does P2568 mean?
P2568 means "Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/Performance". P2568 is the plausibility check of the sensor on a direct ozone reduction (DOR) radiator, whose coating converts ozone in the cooling air. It is a generic code, so it means the same on every make.
Is it safe to drive with P2568?
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 P2568 fail an emissions test?
Yes, it can. P2568 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 P2568 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2568 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.