Code result
P00D5
HO2S Sensor Correlation Bank 1 Sensor 1/Bank 1 Sensor 2
Moderate severity
What it means
Pre- and post-cat oxygen sensors on bank 1 do not correlate as expected — typical sign of catalyst inefficiency or one failed sensor.
Is it safe to drive?
Use caution
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
Catalyst aged or contaminated
highOne of the most commonly reported causes for this code — check this first.
Related help
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