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:

Ignition voltage is between 10 and 16 volts.
MAP sensor signal is between 26 and 100 kPa.
Fuel level is more than 19 percent.
Engine speed is between 650 and 6500 RPM.
ISM circuit has open or shorted signals on SEC 1 line.