What does code P2572 mean?

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2572

P2572Direct Ozone Reduction Catalyst Deterioration Sensor Circuit

P2572 indicates that the powertrain control module has detected a fault in the electrical circuit for the Direct Ozone Reduction Catalyst Deterioration Sensor, which is a sensor used on some vehicles to monitor the efficiency of a specialized catalyst that reduces ozone-forming emissions. The computer compares the sensor signal to expected values and sets this code when the signal is out of range, intermittent, or absent, pointing to a wiring, connector, or sensor problem rather than a catalyst failure.

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.