The question is... Why did the OBDII self tests on your Ford not complete
and why the required readiness flags did not set. You'll need to find out
what trouble codes are stored in the engine control computer and diagnose
the emissions components they pertain too. Once the components and/or
systems are repaired, the self tests can once again initiate; hopefully with
passing results. Along with OBDII trouble codes your vehicle's computer has
freeze frame data stored in the system. A trouble code scan tool can
retrieve this information and assist a smog check mechanic with finding your
Ford's problem.
posted by SmogTips Support
