P1540 OBD Trouble Code

1 result found

P1540 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

A/C System, High Pressure Conditions

Cause

Engine running with A/C on, then the PCM detected the A/C Clutch was disabled 10 times by the A/C High Pressure Switch with an A/C High Side Temp of less than 109°F

Try also: https://www.obd-codes.com/p1540