P0535 Fault Code

A/C Evaporator Temperature Sensor Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0535 fault code refers to an issue with the A/C evaporator temperature sensor circuit in a vehicle. This sensor plays a critical role in monitoring the temperature of the A/C evaporator to ensure the system operates efficiently. When the sensor fails or the circuit has an issue, it can lead to suboptimal A/C performance.

What are the symptoms of the P0535 code?

Common symptoms associated with the P0535 fault code include:

• Inconsistent or ineffective cooling performance from the A/C system.
• The A/C system may not engage at all.
• Erratic cabin temperature fluctuations.
• Illuminated check engine light on the dashboard.

What causes the P0535 code?

The P0535 code can be triggered by several factors including:

• A faulty A/C evaporator temperature sensor.
• Damaged wiring or connectors in the sensor circuit.
• A failed or malfunctioning engine control module (ECM).
• Corrosion in the electrical connections affecting sensor performance.

How to fix P0535?

To resolve a P0535 fault code, consider the following steps:

• Inspect the A/C evaporator temperature sensor and its wiring for any visible damage or corrosion.
• Use a multimeter to test the sensor's resistance and ensure it falls within the manufacturer's specifications.
• Replace the A/C evaporator temperature sensor if it is found to be faulty.
• Repair any damaged wiring or connectors found during inspection.
• Clear the fault code and test the A/C system to ensure the issue has been resolved.