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P1540 Diagnostic Trouble Code Discussion for November 2007

Air Conditioning Refrigerant Over-Pressure - Air Conditioning Disabled

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Trouble Ticket Help Requests for DTC P1540
Help Request Posted
2000 Mazda Millenia 2.3L Surge, Cuts out, MIL Lamp on VIN: JMTA2229Y1
P1540: Air Bypass Valve System. ... installed a used engine. Engine starts and runs good most of the time but at times when you start the engine it will set a p1525 knock sensor code which turns on mil. Also at times when you accelerate from a stop The traction control light will start flash...
November 15, 2007