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P1540 Diagnostic Trouble Code Discussion for July 2008

Air Conditioning Refrigerant Over-Pressure - Air Conditioning Disabled

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Trouble Ticket Help Requests for DTC P1540
Help Request Posted
1998 Mazda Millenia S 2.3L Surge, Stall VIN: JM1TA2224W
P1540: Air Bypass Valve System. ... on a wrecker because it would not run. I started the vehicle up and pulled it into the shop and it started surging and the died. If you rev the engine up to 1500 rpm with the A/C off it will run good untill you let it idle also if you turn the A/C on it wi...
July 09, 2008