AutoCodes – Generic – P2517

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

Quick Answer

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side Pressure Sensor. 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 indicates Air Condition Refrigerant Pressure Sensor 'B' Circuit Low.
Common causes
Common causes include Low refrigerant, Too much refrigerant, Faulty Low Side Pressure Sensor.
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.
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Code Popularity 4,472
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 17, 2019
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Code P2517 Description

The Powertrain Control Module (PCM) monitors the refrigerant pressure through the Air Condition (A/C) Pressure Sensor. The PCM supplies a 5V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure causes the sensor signal to the PCM to vary. When the pressure is high, the signal is high. When the pressure is low, the signal is low. The PCM sets the OBII code when the signal from the sensor is out of factory specifications.
OBDII Code P2517 - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low - AutoCodes.com
P2517 Code - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low

What are the Possible Causes of the DTC P2517?

  • Low refrigerant
  • Too much refrigerant
  • Faulty Low Side Pressure Sensor
  • Low Side Pressure Sensor harness is open or shorted
  • Low Side Pressure Sensor circuit poor electrical connection

How to Fix the DTC P2517?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2517 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2517 code?

Need more information on how to fix the P2517 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2517 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P2517 Buick β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Cadillac β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Chevrolet β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Chrysler β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Dodge β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Ford β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 GMC β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
  • P2517 Mercedes-Benz β€” Air Condition Refrigerant Pressure Sensor 'B' Circuit Low
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.

Frequently Asked Questions about P2517 Code

1. What are the common symptoms of OBDII code P2517?

- Common symptoms include air conditioning system malfunction, weak or warm air coming from the vents, and the AC compressor not engaging.

2. What could cause the Air Condition Refrigerant Pressure Sensor 'B' Circuit Low code to trigger?

- Possible causes include a faulty refrigerant pressure sensor, damaged wiring or connectors in the sensor circuit, low refrigerant level, or a problem with the AC compressor.

3. How can I diagnose the cause of OBDII code P2517?

- You can diagnose the issue by checking the refrigerant pressure sensor for proper operation, inspecting the sensor's wiring and connectors for damage, testing the refrigerant level, and examining the AC compressor for any issues.

4. Can a low refrigerant level trigger code P2517?

- Yes, a low refrigerant level can cause the refrigerant pressure sensor to detect low pressure, which may trigger the P2517 code.

5. What are the repair options for OBDII code P2517?

- Repair options may include replacing the faulty refrigerant pressure sensor, repairing any damaged wiring or connectors, refilling the refrigerant to the correct level, or addressing any AC compressor issues.

6. Is it safe to continue driving with OBDII code P2517 present?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the air conditioning system and potentially affect the vehicle's overall performance.

7. Can I reset OBDII code P2517 without addressing the underlying issue?

- While you can clear the code with an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code P2517?

- The cost of repairs can vary depending on the specific issue causing the code, but it may range from a relatively inexpensive sensor replacement to a more costly compressor repair.

9. Can a DIY enthusiast fix OBDII code P2517 at home?

- Some aspects of diagnosing and repairing this code may be within reach of a DIY enthusiast, such as checking sensor connections and refrigerant levels. However, more complex repairs may require professional assistance.

10. Will fixing OBDII code P2517 improve my vehicle's fuel efficiency?

- Addressing issues related to the air conditioning system, as indicated by this code, can help improve overall vehicle performance and potentially contribute to better fuel efficiency.

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