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Home >> Acura >> 1986 >> Legend Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Engine Control System >> Trouble Shooting >> Emission Test Failure

Emission Test Failure

Check if PGM-FI light and Red LED light is on. This indicates that back-up system is in operation. Replace ECU with one known to be good and recheck. Check MAP sensor, oxygen sensor, ERG control system and all other emission controls.