What does code P2570 mean?

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2570

P2570Direct Ozone Reduction Catalyst Temperature Sensor Circuit High

P2570 means the engine computer has detected an abnormally high voltage on the signal circuit of the direct ozone reduction catalyst temperature sensor, which is used on vehicles with a special ozone-reducing catalyst to monitor its temperature. The computer expects the sensor's voltage to stay within a calibrated range, and a sustained high reading tells it the circuit is likely open, shorted to voltage, or the sensor itself has failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.