P2517 Fault Code

A/C Refrigerant Pressure Sensor B Circuit Low

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

The A/C Refrigerant Pressure Sensor B Circuit Low fault code indicates an issue with the refrigerant pressure sensor circuit in the vehicle's air conditioning system. This sensor is responsible for monitoring the pressure of the refrigerant and sending signals to the engine control module (ECM) to ensure the A/C system operates efficiently. When the sensor circuit reads a low voltage or signal, this fault code is triggered.

What are the symptoms of the P2517 code?

Drivers may experience the following symptoms when this fault code is present:

• A/C system not cooling properly or not functioning at all
• Unusual clicking or buzzing noises from the A/C compressor
• Erratic or fluctuating cabin temperature
• Warning lights or messages on the dashboard related to the A/C system
• The engine may experience performance issues if the fault impacts the ECM's operation

What causes the P2517 code?

Several factors can lead to the A/C Refrigerant Pressure Sensor B Circuit Low fault code, including:

• A faulty refrigerant pressure sensor
• Damaged wiring or connectors in the sensor circuit
• Low refrigerant levels in the A/C system
• Poor electrical connections or corrosion at the sensor terminals
• Faulty ECM that misinterprets sensor data

How to fix P2517?

To resolve the A/C Refrigerant Pressure Sensor B Circuit Low fault code, the following steps should be taken:

1. Inspect the refrigerant pressure sensor and wiring for any visible damage or wear.
2. Check the refrigerant level in the A/C system and recharge if necessary.
3. Test the refrigerant pressure sensor with a multimeter to ensure it operates within specifications.
4. Clear the fault code, and perform a road test to verify that the A/C system is functioning properly.
5. If the problem persists, consider inspecting or replacing the ECM.