B1840 2016 Chevrolet Silverado Code - Driver Seat Lumbar Up Switch Circuit
Quick Answer
The B1840 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado specifically relates to the driver seat lumbar up switch circuit. Common causes include Wiring harness damage or corrosion, Faulty lumbar support switch, Malfunctioning seat control module. 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
- B1840 2016 Chevrolet Silverado indicates Driver Seat Lumbar Up Switch Circuit.
- Common causes
- Common causes include Wiring harness damage or corrosion, Faulty lumbar support switch, Malfunctioning seat control module.
- 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.
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Code B1840 2016 Chevrolet Silverado Description
The B1840 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado specifically relates to the driver seat lumbar up switch circuit. This code indicates that there is a malfunction in the circuit that controls the driver seat's lumbar support adjustment in the upward direction. The lumbar support feature is designed to provide additional lower back support and comfort for the driver, and when the circuit malfunctions, it can lead to the inability to adjust the lumbar support in the upward direction.
Common Causes of B1840 2016 Chevrolet Silverado
- Wiring harness damage or corrosion.
- Faulty lumbar support switch.
- Malfunctioning seat control module.
- Defective seat motor or actuator.
- Loose or disconnected electrical connectors.
Symptoms of B1840 2016 Chevrolet Silverado
- Inability to adjust the driver seat lumbar support in the upward direction.
- Lumbar support adjustment only working in one direction.
- Intermittent or erratic operation of the lumbar support switch.
- Illumination of the airbag warning light on the dashboard.
- Unusual noises coming from the driver seat when attempting to adjust the lumbar support.
How to Fix B1840 2016 Chevrolet Silverado
- Begin by conducting a thorough visual inspection of the wiring harness connected to the driver seat lumbar support switch to check for any visible damage or corrosion. Repair or replace any damaged wiring as needed.
- Test the lumbar support switch using a multimeter to determine if it is functioning correctly. Replace the switch if it is found to be faulty.
- Check the seat control module for any signs of damage or malfunction. If necessary, replace the module with a new one.
- Inspect the seat motor or actuator for proper operation. Replace the motor or actuator if it is not functioning correctly.
- Clear the DTC from the vehicle's onboard computer using a diagnostic scan tool after completing the repairs to reset the system and ensure the issue has been resolved.
Cost to Fix B1840 2016 Chevrolet Silverado
The typical repair costs for addressing the B1840 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of parts such as a lumbar support switch, seat control module, or seat motor can range from $50 to $200 each. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair bill can vary from $150 to $500 or more, depending on the extent of the repairs needed. It is advisable to check with local auto repair shops for more accurate cost estimates based on your specific situation.
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Frequently Asked Questions about B1840 2016 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B1840 in a 2016 Chevrolet Silverado related to the Driver Seat Lumbar Up Switch Circuit?
- The common symptoms include the driver seat lumbar up switch not functioning properly, the seat lumbar support not adjusting correctly, or the lumbar adjustment controls being unresponsive.
2. What are the potential causes of OBDII code B1840 in a 2016 Chevrolet Silverado?
- The code B1840 in a 2016 Chevrolet Silverado could be triggered by issues such as a faulty lumbar up switch, wiring problems in the circuit, or a malfunctioning control module.
3. How can I diagnose the OBDII code B1840 in my 2016 Chevrolet Silverado?
- To diagnose the OBDII code B1840, you can use a diagnostic scanner to retrieve the specific trouble code, inspect the lumbar up switch for any visible damage, and check the wiring connections for any signs of wear or corrosion.
4. What are some repair tips for tackling OBDII code B1840 in a 2016 Chevrolet Silverado?
- Repair tips for addressing code B1840 may include replacing the faulty lumbar up switch, repairing any damaged wiring in the circuit, or reprogramming the control module if necessary.
5. Can I fix OBDII code B1840 in my 2016 Chevrolet Silverado by myself, or do I need professional help?
- Depending on your expertise and tools available, you may be able to fix code B1840 yourself by following repair manuals or online guides. However, if you are unsure or unfamiliar with automotive electrical systems, seeking professional help is recommended.
6. Is it safe to continue driving my 2016 Chevrolet Silverado with OBDII code B1840 related to the Driver Seat Lumbar Up Switch Circuit?
- While the vehicle may still be operable with this code, it's advisable to address the issue promptly to ensure the proper functioning of the driver seat lumbar support system and avoid any potential discomfort or safety hazards while driving.
7. Are there any recalls or service bulletins related to OBDII code B1840 in a 2016 Chevrolet Silverado?
- It's recommended to check with a Chevrolet dealership or online databases for any recalls or service bulletins specifically addressing OBDII code B1840 in the 2016 Chevrolet Silverado related to the Driver Seat Lumbar Up Switch Circuit.
8. How much should I expect to pay for repairing OBDII code B1840 in my 2016 Chevrolet Silverado at a dealership or repair shop?
- The cost of repairing OBDII code B1840 in a 2016 Chevrolet Silverado can vary depending on the specific issue, parts needed, labor rates, and dealership or repair shop pricing. It's advisable to get a few quotes to compare prices.
9. Will resetting the OBDII code B1840 in my 2016 Chevrolet Silverado make the issue go away permanently?
- Resetting the OBDII code B1840 may temporarily clear the error code, but if the underlying issue such as a faulty switch or wiring problem is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.
10. Can extreme temperatures or environmental factors contribute to triggering OBDII code B1840 in a 2016 Chevrolet Silverado?
- Extreme temperatures or environmental factors can potentially affect the electrical components and wiring associated with the driver seat lumbar up switch circuit, leading to issues like code B1840. Insulating or protecting these components can help prevent such problems.
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