A/C System High Pressure
Table of contents
P1540 BUICK Possible Causes
- Low A/C System Refrigerant
- Faulty A/C System Pressure Sensor
- A/C System Pressure Sensor harness is open or shorted
- A/C System Pressure Sensor circuit poor electrical connection
How do I fix code P1540 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1540 BUICK code
The cost of diagnosing the P1540 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1540 BUICK Description
The Powertrain Control Module (PCM) monitors the A/C System Pressure Sensor. The PCM sets the OBDII code when the A/C System Pressure Sensor is not to factory specifications.