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P1540 Diagnostic Trouble Code Discussion for March 2006

Air Conditioning Refrigerant Over-Pressure - Air Conditioning Disabled


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Trouble Ticket Help Requests for DTC P1540
Help Request Posted
1997 Subaru Legacy GT 2.5L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 4S3BD675XV
P1540: Vehicle Speed Sensor Signal Circuit Malfunction. ... here with an intermittent problem. Every 2 to 4 days, this Subaru will turn on the MIL, start stalling, and running erratically, then clear up. I have never experienced this problem, but it has happened to my customer 10 times so far. Each time he will swi...
March 07, 2006