Diagnostic Aids
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P0125 is designed to detect a skewed ECT sensor or a faulty thermostat.
- A skewed IAT sensor may cause this DTC to set. The IAT sensor should read near the ambient temperature while driving.