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P2517 Cadillac Code - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low

Quick Answer

The P2517 diagnostic trouble code (DTC) for Cadillac vehicles relates to the Air Conditioning Refrigerant Pressure Sensor 'B' Circuit registering a low signal. Common causes include Low refrigerant levels due to a leak in the system, Faulty air conditioning refrigerant pressure sensor, Wiring or electrical issues in the sensor circuit. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P2517 Cadillac indicates Air Condition Refrigerant Pressure Sensor 'B' Circuit Low.
Common causes
Common causes include Low refrigerant levels due to a leak in the system, Faulty air conditioning refrigerant pressure sensor, Wiring or electrical issues in the sensor circuit.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2517 Cadillac Description

The P2517 diagnostic trouble code (DTC) for Cadillac vehicles relates to the Air Conditioning Refrigerant Pressure Sensor 'B' Circuit registering a low signal. The air conditioning system in vehicles relies on refrigerant pressure sensors to monitor and regulate the pressure levels within the system. The 'B' circuit refers to a specific sensor or circuit within the air conditioning system. When the sensor detects that the refrigerant pressure is too low, it triggers the P2517 code.

OBDII Code P2517 Cadillac - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
P2517 Cadillac Code - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low

Common Causes of P2517 Cadillac

  1. Low refrigerant levels due to a leak in the system
  2. Faulty air conditioning refrigerant pressure sensor
  3. Wiring or electrical issues in the sensor circuit
  4. Malfunctioning air conditioning compressor
  5. Issues with the air conditioning control module

Symptoms of P2517 Cadillac

  1. Reduced cooling performance in the cabin
  2. Air conditioning system blowing warm air
  3. Inconsistent cooling levels
  4. Unusual noises coming from the air conditioning system
  5. Malfunction indicator light (MIL) or check engine light illuminated on the dashboard

How to Fix P2517 Cadillac

  1. Begin by diagnosing the specific cause of the low refrigerant pressure, using a scan tool to read the DTC and pinpoint the issue.
  2. Inspect the air conditioning system for any leaks, using specialized equipment to detect the source of the leak.
  3. Test the air conditioning refrigerant pressure sensor for proper operation, replacing it if necessary.
  4. Check the wiring and electrical connections in the sensor circuit, repairing any damaged wires or connectors.
  5. Refill the refrigerant in the air conditioning system to the appropriate levels, ensuring proper pressure and functioning of the system.

Cost to Fix P2517 Cadillac

The typical repair costs for addressing the P2517 code on a Cadillac vehicle can range from $150 to $500, depending on the specific cause of the issue and the required repairs. This estimate includes the cost of parts, such as a new refrigerant pressure sensor or compressor, as well as labor charges. It is important to note that the actual cost may vary based on the location, the vehicle's make and model, and the rates charged by the auto repair shop. It is recommended to obtain a detailed quote from a qualified mechanic or service center before proceeding with the repairs.

What does this mean?

Tech Notes for P2517 Cadillac

Do not just add more refrigerant, use an A/C machine to evacuate the refrigerant and charge the correct amount.

When is the Code Detected?

The Powertrain Control Module (PCM) sets the code when detects a short to ground at the A/C low side pressure sensor signal circuit.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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