B1439 2018 Chevrolet Silverado Code - Intermittent Device Voltage
Quick Answer
The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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
- B1439 2018 Chevrolet Silverado indicates Intermittent Device Voltage.
- Common causes
- Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted.
- 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 B1439 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC B1439 2018 Chevrolet Silverado?
- Low battery voltage
- Faulty Control Module
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How to Fix the DTC B1439 2018 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 B1439 2018 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.
Need more information about the B1439 2018 Chevrolet Silverado code?
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Frequently Asked Questions about B1439 2018 Chevrolet Silverado Code
1. What does OBDII code B1439 mean on a 2018 Chevrolet Silverado?
Code B1439 indicates an "Intermittent Device Voltage" issue, meaning a component or module is experiencing fluctuating voltage that falls outside the normal range.
2. What are common symptoms of code B1439 in a 2018 Chevrolet Silverado?
Symptoms may include warning lights on the dashboard, intermittent electrical issues, malfunctioning components like lights or accessories, and occasional system resets.
3. What causes code B1439 to appear on a 2018 Chevrolet Silverado?
Common causes include loose or corroded electrical connections, damaged wiring, a failing battery, or an issue with the alternator or voltage regulation.
4. Can a bad battery cause code B1439 on a 2018 Chevrolet Silverado?
Yes, a weak or failing battery can cause intermittent voltage issues and trigger code B1439.
5. How can I diagnose code B1439 on my 2018 Chevrolet Silverado?
Start by checking the battery voltage and connections, inspecting wiring and connectors for damage or corrosion, and testing the alternator for proper output.
6. Is code B1439 serious on a 2018 Chevrolet Silverado?
While not immediately critical, ignoring it can lead to further electrical issues or damage to sensitive components over time.
7. Can I drive my 2018 Chevrolet Silverado with code B1439?
You can drive the vehicle, but it’s recommended to address the issue promptly to avoid potential electrical system failures.
8. What repairs are typically needed for code B1439 on a 2018 Chevrolet Silverado?
Repairs may include cleaning or tightening electrical connections, replacing damaged wiring, replacing a faulty battery, or repairing the alternator.
9. How much does it cost to fix code B1439 on a 2018 Chevrolet Silverado?
Costs vary depending on the root cause but can range from $50 for minor electrical fixes to $300+ for alternator replacement or more extensive repairs.
10. Can a software update fix code B1439 on a 2018 Chevrolet Silverado?
In rare cases, a software update may address module communication issues, but physical electrical problems are the most common cause and should be checked first.
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