AutoCodes – Buick – P2517 Buick

P2517 Buick 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 Buick 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 1,075

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 17, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2517 Buick 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 Buick - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low - AutoCodes.com — P2517 Buick Code - Air Condition Refrigerant Pressure Sensor 'B' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2517 Buick?

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 Buick?

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.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2517 Buick 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.

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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.

Frequently Asked Questions about P2517 Buick Code

What does the OBDII code P2517 mean on a Buick?

P2517 indicates an issue with the Air Conditioning Refrigerant Pressure Sensor 'B' Circuit, specifically that the sensor is detecting a low voltage or signal issue.

What are the common symptoms of the P2517 code in a Buick?

Symptoms may include the air conditioning not functioning properly, the A/C blowing warm air, or the check engine light being illuminated.

What causes the P2517 code to appear on a Buick?

Common causes include a faulty refrigerant pressure sensor, damaged wiring or connectors in the sensor circuit, low refrigerant levels, or issues with the A/C control module.

Can low refrigerant levels trigger the P2517 code?

Yes, low refrigerant levels can cause the pressure sensor to send incorrect signals, potentially triggering the P2517 code.

How do you diagnose the P2517 code in a Buick?

Diagnosis typically involves checking the refrigerant levels, inspecting the wiring and connectors for damage, testing the refrigerant pressure sensor, and scanning the A/C system with a diagnostic tool.

Can I drive my Buick with the P2517 code?

Driving with this code is generally safe, but your air conditioning may not function properly. Itâ€™s best to address the issue to avoid further problems with the A/C system.

How do you fix the P2517 code on a Buick?

Repairs may involve replacing the refrigerant pressure sensor, repairing damaged wiring or connectors, recharging the refrigerant, or addressing issues with the A/C control module.

What tools are needed to fix the P2517 code on a Buick?

You may need an OBDII scanner, a multimeter for electrical testing, and A/C recharge equipment to check refrigerant levels and pressure.

Is the P2517 code specific to Buicks or does it apply to other vehicles?

The P2517 code is not Buick-specific and can appear on other vehicles with similar A/C systems; however, diagnosis and repair steps may vary by make and model.

How much does it cost to repair the P2517 code on a Buick?

The cost can vary depending on the issue. Replacing the refrigerant pressure sensor may cost $100-$300, while recharging refrigerant or addressing wiring issues may cost less.