B3902 2014 Chevrolet Silverado Code - Incorrect Immobilizer Identifier Received
Quick Answer
When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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
- B3902 2014 Chevrolet Silverado indicates Incorrect Immobilizer Identifier Received.
- Common causes
- Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 B3902 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3902 2014 Chevrolet Silverado?
- Faulty Body Control Module (BCM)
- Body Control Module harness is open or shorted
- Body Control Module circuit poor electrical connection
How to Fix the DTC B3902 2014 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 B3902 2014 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 B3902 2014 Chevrolet Silverado Code
1. What does the OBDII code B3902 mean for a 2014 Chevrolet Silverado?
B3902 indicates "Incorrect Immobilizer Identifier Received," meaning the vehicle's theft-deterrent system is not recognizing the programmed key or transponder.
2. What are common symptoms of code B3902 in a 2014 Chevrolet Silverado?
Symptoms include the engine failing to start, security warning light illumination, and possible intermittent starting issues.
3. What causes code B3902 in a 2014 Chevrolet Silverado?
Common causes are a faulty key or transponder, issues with the immobilizer system, wiring problems, or a malfunctioning Body Control Module (BCM).
4. How can I fix code B3902 on my 2014 Chevrolet Silverado?
Check the key for damage, attempt to reprogram the key, inspect wiring and connections to the BCM, and replace faulty components as needed.
5. Can a dead key fob battery trigger code B3902?
Yes, a dead or weak key fob battery can prevent the immobilizer system from recognizing the key, potentially causing this code.
6. Is code B3902 related to the theft-deterrent system?
Yes, this code is directly tied to the vehicle's theft-deterrent system, which ensures only authorized keys can start the engine.
7. Can I clear code B3902 without fixing the problem?
Clearing the code without addressing the underlying issue may temporarily remove it, but the problem will persist, and the code is likely to return.
8. How much does it cost to repair code B3902 on a 2014 Chevrolet Silverado?
Repair costs vary depending on the cause, ranging from $50 for a new key fob battery to $500 or more for BCM replacement or reprogramming.
9. Can code B3902 prevent the truck from starting?
Yes, if the immobilizer system fails to recognize the key, it will disable the engine, preventing it from starting.
10. Do I need to visit a dealership to fix code B3902?
While simple issues like a dead key fob battery can be resolved at home, reprogramming keys or repairing the BCM may require dealership assistance.
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