Code Enable Criteria

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport, 2002 Isuzu Rodeo, 2002 Isuzu Axiom, and 2002 Honda Passport. 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:

No related DTCs.
Engine has been running for 120 seconds or more.
Ignition voltage is between 11-18 volts.
Bank 1 HO2S No. 2 voltage does not change more than 150 millivolts from bias voltage (between 400 and 500 millivolts) for a longer amount of time than necessary. Maximum time required to reach operating range is 120 seconds. This warm up time depends on engine coolant temperature at time of start-up and total air flow since last start-up.