P2569
Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low
What it means
Direct Ozone Reduction (DOR) catalysts are coated radiator surfaces or dedicated catalysts that decompose tropospheric ozone passing over the radiator — used for low-emissions vehicles. The temperature sensor monitoring the DOR brick reads stuck low — short to ground or sensor short.
Is it safe to drive?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Signal wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Sensor shorted internally
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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