B291B 2018 Chevrolet Silverado Code - Content Theft Deterrent Sensor
Quick Answer
The Body Control Module (BCM) performs various communication fault detection tests to determine if a software, hardware, or communication concern exists with the ultrasonic intrusion sensor. Common causes include Faulty Content Theft Deterrent Sensor Module, Content Theft Deterrent Sensor Module harness is open or shorted, Content Theft Deterrent Sensor 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
- B291B 2018 Chevrolet Silverado indicates Content Theft Deterrent Sensor.
- Common causes
- Common causes include Faulty Content Theft Deterrent Sensor Module, Content Theft Deterrent Sensor Module harness is open or shorted, Content Theft Deterrent Sensor 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 B291B 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC B291B 2018 Chevrolet Silverado?
- Faulty Content Theft Deterrent Sensor Module
- Content Theft Deterrent Sensor Module harness is open or shorted
- Content Theft Deterrent Sensor Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B291B 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 B291B 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 B291B 2018 Chevrolet Silverado code?
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Frequently Asked Questions about B291B 2018 Chevrolet Silverado Code
1. What does the OBDII code B291B mean on a 2018 Chevrolet Silverado?
The code B291B indicates an issue with the Content Theft Deterrent Sensor, which is part of the vehicle's anti-theft system.
2. What are common symptoms of the B291B code?
Symptoms include the anti-theft system not arming or disarming properly, false alarms, or the theft-deterrent light remaining illuminated on the dashboard.
3. What causes the B291B code to appear?
Common causes include a faulty theft deterrent sensor, wiring issues, a damaged theft deterrent module, or software glitches in the vehicle's anti-theft system.
4. How do I diagnose the B291B code on my Silverado?
Use an OBDII scanner to confirm the code, then inspect the theft deterrent sensor and its wiring for damage or loose connections.
5. Can the B291B code trigger a no-start condition?
Yes, in some cases, this code can engage the anti-theft system and prevent the vehicle from starting.
6. How can I fix the B291B code?
Repairs may involve replacing the theft deterrent sensor, repairing damaged wiring, or reprogramming the anti-theft system with a dealership tool.
7. Is it safe to drive with the B291B code active?
While the vehicle may still drive, the anti-theft system may not function correctly, leaving your truck vulnerable.
8. How much does it cost to fix the B291B code on a 2018 Silverado?
Repair costs can vary but typically range from $100 to $500 depending on whether the sensor, wiring, or module needs replacement.
9. Can I clear the B291B code without fixing the issue?
Clearing the code without addressing the root cause may result in the code returning and continued anti-theft system issues.
10. Do I need a professional to repair the B291B code?
While DIY repairs are possible for minor wiring issues, a professional is recommended for sensor replacement or system reprogramming.
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