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P1540 Diagnostic Trouble Code Discussion for October 2005

Air Conditioning Refrigerant Over-Pressure - Air Conditioning Disabled

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Trouble Ticket Help Requests for DTC P1540
Help Request Posted
1995 Mazda Millenia S 2.3L Hesitation, Cuts out, Stall VIN: JM1TA2220S
P1540: ABV - Open or Short. ... cold. Once operating temperature is met, engine has no power on acceleration. I found several good cases in IATN history. Most point to ABV solenoid valves or vacuum (cracked tee) leaks. I can't find problems with either on this car. The owner advised me ...
October 31, 2005