Code Enable Criteria

WARNING: This page is about a different car, the 2002 Isuzu Trooper. However, it is still accessible from the selected car via links, so may be relevant.

Following conditions must be met for DTC diagnostic test to run:

Engine is running.
Ignition voltage is between 11 and 16 volts.
Intake air temperature is more than 37°F (3°C).
Desired EGR position is less than 3 percent.
Difference between desired EGR and current EGR is less than 3 percent.
Difference between EGR pintle current and command positions becomes more than 15 percent and lasts more than 15 seconds, condition is meant three times in a trip cycle, PCM will illuminate MIL.