Diagnostic Aids
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- A skewed or stuck engine coolant temperature (ECT) or IAT will cause the calculated models to be inaccurate and may cause this DTC to run when it should not. Refer to Temperature Versus Resistance .
- A skewed MAP sensor will also cause the first and second intake manifold models to disagree with the actual MAP sensor measurements. Use a scan tool and compare the MAP Sensor parameter to a known good vehicle under various operating conditions.