OBD-II code · Powertrain (generic, extended)
P20E3 Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1)
Exhaust Gas Temperature Sensor 1/3 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 with P20E3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOne EGT sensor drifts
- PossibleExhaust leak between the two sensor positions
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Gas Temperature Sensor, Exhaust Pipe
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.