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  1. CADILLAC P1509

P1509 / MAZDA

Bypass Air Solenoid '2 Circuit

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P1509 / JAGUAR

Idle Control System Circuit Shorted

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P1509 / HONDA

IAC Valve Circuit Failure

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P1509 / GENERIC

Idle Control System Circuit Shorted

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P1509 / CHEVROLET

Idle Speed High - Idle Air Control (IAC) System Not Responding

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P1509 / BMW

Idle Speed Control Valve Opening Solenoid Control Circuit Electrial

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P1509 / AUDI

Idle Air Control Circ. Electrical Malfunction

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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.