Code result
P20E4
Exhaust Gas Temperature Sensor 2/3 Correlation
Moderate severity
What it means
Exhaust Gas Temperature Sensor 2/3 Correlation (Bank 1): the value does not correlate with the related sensor or expected pattern. The ECU uses this temperature to protect the catalyst and diesel particulate filter.
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
One EGT sensor drifts
highOne of the most commonly reported causes for this code — check this first.
Related help
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