Engine-Codes - Cadillac - P1531 CADILLAC

P1531 CADILLAC - A/C Low Side Temperature Sensor Fault

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1531 CADILLAC 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 is the P1531 CADILLAC code repair?

Start by checking 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.

What is the cost to diagnose the P1531 CADILLAC code

Labor: 1.0

The cost to diagnose the P1531 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1531 CADILLAC Meaning

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.

More Information

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