B393B 2015 Chevrolet Silverado Code - Air Conditioning Compressor Valve Control Circuit
Quick Answer
This A/C system uses a conventional clutch to engage and mechanically turn the compressor and a variable displacement solenoid valve to alter the amount of displacement created by the turning of the compressor. Common causes include Faulty Air Conditioning Compressor, Air Conditioning Compressor harness is open or shorted, Air Conditioning Compressor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B393B 2015 Chevrolet Silverado indicates Air Conditioning Compressor Valve Control Circuit.
- Common causes
- Common causes include Faulty Air Conditioning Compressor, Air Conditioning Compressor harness is open or shorted, Air Conditioning Compressor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B393B 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC B393B 2015 Chevrolet Silverado?
- Faulty Air Conditioning Compressor
- Air Conditioning Compressor harness is open or shorted
- Air Conditioning Compressor circuit poor electrical connection
- Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module
How to Fix the DTC B393B 2015 Chevrolet Silverado?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B393B 2015 Chevrolet Silverado 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 B393B 2015 Chevrolet Silverado Code
1. What does the OBDII code B393B mean on a 2015 Chevrolet Silverado?
The code B393B indicates an issue with the Air Conditioning Compressor Valve Control Circuit, which affects the functioning of the air conditioning system.
2. What are the common symptoms of code B393B in a 2015 Chevy Silverado?
Symptoms include the air conditioning not cooling properly, the AC compressor failing to engage, or inconsistent cooling performance.
3. What causes the B393B code to appear on a Chevrolet Silverado?
Common causes include a faulty AC compressor control valve, damaged wiring or connectors in the control circuit, or a malfunctioning HVAC control module.
4. How can I diagnose the B393B code on my Silverado?
Diagnosing involves inspecting the wiring and connectors for damage, testing the compressor control valve for proper operation, and checking the HVAC control module for faults.
5. Can I drive my 2015 Chevy Silverado with the B393B code active?
Yes, you can drive the truck, but the air conditioning system may not function properly, leading to discomfort in hot weather.
6. How do I fix the B393B code on my Chevy Silverado?
Repairs usually involve replacing the AC compressor control valve, repairing damaged wiring or connectors, or reprogramming or replacing the HVAC control module if necessary.
7. How much does it cost to repair the B393B code on a 2015 Silverado?
Repair costs vary but typically range from $150 to $500, depending on whether the issue is with the control valve, wiring, or HVAC module.
8. Can a low refrigerant level cause the B393B code?
While low refrigerant levels can affect AC performance, they are not a direct cause of this code, which is related to an electrical control issue.
9. Is the B393B code a common problem on 2015 Chevy Silverados?
It’s not one of the most common codes but can occur, especially in vehicles with high mileage or if the air conditioning system has not been maintained properly.
10. Does clearing the code with a scanner fix the B393B issue?
Clearing the code may temporarily remove it, but the underlying issue must be addressed to prevent the code from returning.
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