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Home › Ford › 1990 › Bronco II 4WD, Automatic › Repair and Diagnosis › Engine Performance › Testing & Diagnosis › Engine Controls - Tests W/Codes › Test H - Fuel Control › Code 86 › Code 86

Code 86

If Code 41 also displayed, service it first.
Low fuel pressure, low pressure pump or restricted fuel supply.
Low fuel flow, clogged injectors or low battery voltage.