P1531
A/C Low Side Temperature Sensor Fault
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Inoperative or poor cooling air conditioner
- Hot air from ducts
- Air conditioner light flashing
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Faulty low pressure temperature sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Wiring harness damage
- Engine control unit malfunction
How to Fix
- Check the integrity of the sensor circuit
- Check sensor resistance at different temperatures
- Inspect connectors and wires for damage
- Replace temperature sensor if necessary
- Reset the error code and check the system operation