A/C Low Side Temperature Sensor Fault
Table of contents
P1531 BUICK Possible Causes
- Faulty A/C Low Side Temperature Sensor
- A/C Low Side Temperature Sensor harness is open or shorted
- A/C Low Side Temperature Sensor circuit poor electrical connection
How do I fix code P1531 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 P1531 BUICK code
The cost of diagnosing the P1531 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)
P1531 BUICK Description
The Heating, Ventilation, and Air Conditioning (HVAC) Control Module monitors the evaporator temperature via the evaporator temperature sensor. When the air is cold, the sensor resistance and signal voltage are high. When the air is warm, the sensor resistance and signal are low.