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  1. FORD P1231

P1231 / JAGUAR

Fuel Pump Secondary Circuit Low, High Speed

Notes:

P1231 / GENERIC

Fuel Pump Secondary Circuit Low, High Speed

Notes:

P1231 / FORD

High Speed Fuel Pump Relay activated

Notes:

P1231 / CHEVROLET

Injector Circuit Cylinder 4 Intermittent

Notes:

P1231 / CADILLAC

Injector Circuit Cylinder 4 Intermittent

Notes:

P1231 / BUICK

Injector Circuit Cylinder 4 Intermittent

Notes:

P1231 / AUDI

Cyl.7-Fuel Inj.Circ. Short to Ground

Notes:

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.