B392B Code - Seat Lumbar/Bolster Pump
Quick Answer
When a seat lumbar, bolster, or massage function is commanded ON, the Seat Bolster Memory Control Module applies battery voltage and a low side drive Pulse Width Modulated (PWM) signal through their respective control circuits to the seat lumbar/bolster pump. Common causes include Faulty Seat Lumbar/Bolster Pump, Seat Lumbar/Bolster Pump harness is open or shorted, Seat Lumbar/Bolster Pump 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
- B392B indicates Seat Lumbar/Bolster Pump.
- Common causes
- Common causes include Faulty Seat Lumbar/Bolster Pump, Seat Lumbar/Bolster Pump harness is open or shorted, Seat Lumbar/Bolster Pump 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 B392B Description
What are the Possible Causes of the DTC B392B?
- Faulty Seat Lumbar/Bolster Pump
- Seat Lumbar/Bolster Pump harness is open or shorted
- Seat Lumbar/Bolster Pump circuit poor electrical connection
- Faulty Seat Bolster Memory Control Module
How to Fix the DTC B392B?
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 B392B 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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Information for Specific Makes
- B392B Buick — Seat Lumbar/Bolster Pump
- B392B Cadillac — Seat Lumbar/Bolster Pump
- B392B Chevrolet — Seat Lumbar/Bolster Pump
- B392B GMC — Seat Lumbar/Bolster Pump
Frequently Asked Questions about B392B Code
1. What are the common symptoms of OBDII code B392B related to the Seat Lumbar/Bolster Pump?
- The common symptoms include a malfunctioning lumbar or bolster pump in the seat, resulting in the loss of lumbar support or improper adjustment of the seat bolster.
2. What are the possible causes of OBDII code B392B for the Seat Lumbar/Bolster Pump?
- The code can be triggered by issues such as a faulty lumbar/bolster pump motor, damaged wiring or connectors, low power supply, or a defective control module.
3. How can I diagnose the OBDII code B392B for the Seat Lumbar/Bolster Pump?
- Diagnosing the issue involves checking the lumbar/bolster pump components, inspecting the wiring for any damage, testing the power supply to the pump, and using a scan tool to retrieve the specific fault code.
4. What are some repair tips for fixing OBDII code B392B associated with the Seat Lumbar/Bolster Pump?
- Repair tips may include replacing the faulty lumbar/bolster pump motor, repairing or replacing damaged wiring or connectors, ensuring a proper power supply, and reprogramming or replacing the control module if necessary.
5. Can OBDII code B392B for the Seat Lumbar/Bolster Pump be safely ignored?
- Ignoring the code may lead to discomfort while driving due to the lack of proper lumbar support or bolster adjustment. It is recommended to address the issue to ensure optimal comfort and safety.
6. Is it possible to reset OBDII code B392B related to the Seat Lumbar/Bolster Pump without repairs?
- While you may be able to clear the code temporarily, it is essential to address the underlying issue causing the fault code to prevent further problems with the seat lumbar/bolster pump.
7. How can I prevent OBDII code B392B from recurring after repairs for the Seat Lumbar/Bolster Pump?
- To prevent code recurrence, ensure proper installation of new components, conduct thorough testing post-repair, and address any related issues like wiring damage or power supply problems.
8. Are there any safety concerns associated with OBDII code B392B and the Seat Lumbar/Bolster Pump?
- While the code itself does not pose immediate safety risks, a malfunctioning seat lumbar/bolster pump can affect driving comfort and potentially lead to fatigue or discomfort during long drives.
9. Can a DIY enthusiast repair OBDII code B392B for the Seat Lumbar/Bolster Pump?
- Depending on the specific issue, DIY enthusiasts with automotive repair experience may be able to address the problem by following repair guides, but complex issues may require professional assistance.
10. How long does it typically take to repair OBDII code B392B related to the Seat Lumbar/Bolster Pump?
- The repair time can vary based on the underlying cause and the complexity of the issue. Simple fixes like replacing a motor may take an hour or two, while more extensive repairs could take longer.
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