Emissions Compliance: Notes

Canada and some states or metropolitan areas in the United States require periodic emission, or Inspection/Maintenance (I/M) tests. All Ford products have been designed to pass these tests. If a Ford vehicle fails an I/M test, ensure correct model, year, test weight (less than vehicle's GVW) and correct calibration (California or Federal) are on the test report.

Identify which gas readings are high or low and identify in which mode the gas(es) failed. If all gases were high at the beginning of the test then decreased, the engine or catalytic converter temperature may not have been at operating temperature and stabilized prior to the test, or the vehicle had idled for an excessive period of time prior to the test. Perform DIAGNOSTIC ROUTINES  after analyzing I/M test report.

If any emission component is changed, Keep-Alive Memory (KAM) should be cleared and basic adaptive strategy should be relearned before repeating state emission test procedure. To clear KAM and perform basic adaptive strategy, perform KEEP ALIVE RANDOM ACCESS MEMORY RESET PROCEDURE under CLEARING CODES under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article.