P2576

Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine Light Is On
Deterioration of environmental indicators
Unstable engine operation at idle
Reduced engine power

Causes

Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Malfunction of the catalyst sensor itself
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the sensor wiring and connectors
Test the catalyst sensor
Clean contacts in connectors
Replace sensor if necessary
Check and reflash the engine control unit

Related codes

P2575 P2577 P0420