AutoCodes – Buick – B2356 Buick

B2356 Buick Code - Seat Front Vertical Position Sensor Circuit Range/Performance

Quick Answer

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor 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: B2356 Buick indicates Seat Front Vertical Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor 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.

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Code Popularity 948

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2356 Buick Description

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. It receives a 5-volt reference and low reference from the Memory Seat Module (MSM)/Driver Position Module (DPM). The sensor sends a voltage signal that varies with the movement of the seat through the sensor signal circuit to the MSM/DPM. Then based on this voltage signal, the MSM/DPM determines the position of the seat.

OBDII Code B2356 Buick - Seat Front Vertical Position Sensor Circuit Range/Performance - AutoCodes.com — B2356 Buick Code - Seat Front Vertical Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B2356 Buick?

Faulty Seat Front Vertical Position Sensor
Seat Front Vertical Position Sensor harness is open or shorted
Seat Front Vertical Position Sensor circuit poor electrical connection
Faulty Memory Seat Module (MSM)/Driver Position Module (DPM)

How to Fix the DTC B2356 Buick?

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 B2356 Buick 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2356 Buick Code

1. What does OBDII code B2356 mean on a Buick?

Code B2356 indicates an issue with the Seat Front Vertical Position Sensor Circuit's range or performance, suggesting the sensor is not functioning within its expected parameters.

2. What are the common symptoms of code B2356 in a Buick?

Symptoms may include the power seat not moving vertically, erratic seat movement, or the seat position memory function failing to work properly.

3. What causes code B2356 to trigger in a Buick?

Common causes include a faulty seat front vertical position sensor, damaged wiring or connectors, or a malfunction in the seat control module.

4. Can I still drive my Buick with code B2356?

Yes, this code does not affect drivability, but it may impact the functionality of the power seat, potentially causing discomfort or inconvenience.

5. How do I diagnose code B2356 in my Buick?

Diagnosis involves inspecting the seat position sensor and its wiring for damage, testing the sensor for proper operation, and scanning for additional related codes.

6. How can I fix code B2356 on my Buick?

Repairs may include replacing the faulty seat front vertical position sensor, repairing or replacing damaged wiring, or reprogramming or replacing the seat control module if necessary.

7. How much does it cost to fix code B2356 in a Buick?

Costs vary depending on the issue but may range between $100 and $300 for parts and labor, depending on whether the sensor, wiring, or module needs repair.

8. Can I reset code B2356 without repairing the issue?

Clearing the code without addressing the underlying problem may temporarily turn off the warning, but the code is likely to return if the issue persists.

9. Is code B2356 a common problem in Buicks?

While not extremely common, this code can occur in Buicks with power seat systems, especially as the vehicle ages or if the seat mechanism is frequently adjusted.

10. Can a blown fuse cause code B2356 in a Buick?

While unlikely, a blown fuse affecting the seat control system could contribute to this code. Checking the fuse box is a good first step in diagnosing the issue.