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Definition of check engine code P1540:
BMW:
Pedal Position Sensor
Citroen/Peugeot:
Air Bypass Valve Circuit Malfunction
Ford:
Air Bypass Valve Circuit Malfunction
GM:
Air Conditioning (A/C) Refrigerant Overpressure - Air Conditioning (A/C) Disabled
Mazda:
ABV System Fault
Mercedes:
Air Bypass Valve Circuit
Opel:
AC refrigerant pressure sensor - circuit malfunction
Volkswagen/Audi:
Vehicle Speed Sensor High Input
Volvo:
Vehicle Speed Sensor High Input
Subaru:
Vehicle Speed Sensor Malfunction 2
