Circuit Description
WARNING: This page is about a different car, the 2000 Isuzu Rodeo and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
PCM closes EGR system on engine start-up to test for any flow. If PCM detects any EGR flow occurred on start-up, in 2 consecutive trips, DTC P0402 will be set. DTC is a "B" code.
Conditions required to set DTC are:
- IAT is greater than 41°F (5°C).
- Engine RPM is less than 500 RPM.
- EGR pintle position is greater than 55 counts.