OBD-II code · Powertrain (generic, extended)
P2C3D Cylinder Head Temperature Sensor A/B Correlation
The signals of cylinder head temperature sensors A and B do not correlate within the calibrated tolerance. One sensor drifts or installation offset between the two channels.
Is it safe to drive with P2C3D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOne sensor characteristic drifted
- PossibleHarness incorrectly swapped between channels
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Likely to fail
- Parts involved
- Cylinder Head Temperature Sensor A, Cylinder Head Temperature Sensor B, Ecm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.