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 above 500 RPM for 10 seconds or more.
System voltage is 11.5 volts or more.
MAF sensor signal frequency is below 1.6 grams/sec., for a total of 50 percent of the last 1000 samples monitored. A sample is taken every cylinder event.