P2518 Chevrolet Code - Air Condition Refrigerant Pressure Sensor 'B' Circuit High
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
- P2518 Chevrolet indicates Air Condition Refrigerant Pressure Sensor 'B' Circuit High.
- 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.
Code P2518 Chevrolet Description
What are the Possible Causes of the DTC P2518 Chevrolet?
- 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 P2518 Chevrolet?
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 P2518 Chevrolet 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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Frequently Asked Questions about P2518 Chevrolet Code
1. What are the common symptoms of OBDII code P2518 in a Chevrolet related to the air conditioning refrigerant pressure sensor circuit?
The common symptoms include the air conditioning system not cooling properly, the AC compressor not engaging, and the AC system cycling on and off frequently.
2. What are the possible causes of OBDII code P2518 in a Chevrolet indicating a high circuit voltage for the air conditioning refrigerant pressure sensor 'B'?
Possible causes include a faulty refrigerant pressure sensor, damaged wiring or connectors in the sensor circuit, low refrigerant levels, or a problem with the AC compressor.
3. How can I diagnose OBDII code P2518 in a Chevrolet related to the air conditioning refrigerant pressure sensor circuit high?
Diagnosis involves checking the refrigerant pressure sensor for proper operation, inspecting the wiring and connectors for any damage, verifying refrigerant levels, and ensuring the AC compressor is functioning correctly.
4. Can a DIY enthusiast repair OBDII code P2518 in a Chevrolet caused by a high circuit voltage in the air conditioning refrigerant pressure sensor 'B'?
While some basic troubleshooting like checking connections and sensor operation can be done by DIYers, diagnosing and repairing electrical issues may require specialized tools and expertise, so it's recommended to consult a professional mechanic.
5. What are the potential risks of ignoring OBDII code P2518 in a Chevrolet related to the air conditioning refrigerant pressure sensor circuit high?
Ignoring this code can lead to continued poor AC performance, potential damage to the AC compressor due to improper cycling, and increased fuel consumption if the AC system is not functioning efficiently.
6. Is it safe to drive a Chevrolet with OBDII code P2518 indicating a high circuit voltage for the air conditioning refrigerant pressure sensor 'B'?
It is generally safe to drive the vehicle with this code, but it's advisable to have the AC system inspected and repaired promptly to avoid further issues and discomfort while driving in hot weather.
7. How much does it typically cost to repair OBDII code P2518 in a Chevrolet caused by a high circuit voltage in the air conditioning refrigerant pressure sensor 'B'?
The cost of repair can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or AC system servicing, which can range from $100 to $500 or more, including parts and labor.
8. Can extreme weather conditions affect the occurrence of OBDII code P2518 in a Chevrolet related to the air conditioning refrigerant pressure sensor circuit high?
Yes, extreme heat or cold can impact the performance of the AC system and potentially trigger issues with the refrigerant pressure sensor circuit, leading to the activation of this trouble code.
9. How long does it usually take to repair OBDII code P2518 in a Chevrolet due to a high circuit voltage in the air conditioning refrigerant pressure sensor 'B'?
The repair time can vary based on the specific diagnosis and required fixes, but a skilled mechanic can typically address the issue within a few hours to a day, depending on parts availability and workload.
10. Are there any preventive measures to avoid encountering OBDII code P2518 in a Chevrolet related to the air conditioning refrigerant pressure sensor circuit high?
Routine maintenance of the AC system, including checking refrigerant levels, ensuring proper sensor operation, and addressing any performance issues promptly, can help prevent the occurrence of this trouble code and maintain optimal AC functionality.
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