Test Description

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedure.

7

A snapshot is the quickest method to capture the data before it changes.

8

An IAT sensor that is skewed low can cause this DTC to set.

10

This step will determine if high resistance has caused this DTC to set.

12

A high resistance short from the signal circuit to the low reference circuit can cause this DTC to set.