AutoCodes – GMC – B0846 GMC

B0846 GMC Code - Seat Position Sensor Circuit

Quick Answer

The telescoping steering column actuator and seat adjuster motors are equipped with position sensors. Common causes include Faulty Seat Position Sensor, Seat Position Sensor harness is open or shorted, Seat Position Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0846 GMC indicates Seat Position Sensor Circuit.
Common causes: Common causes include Faulty Seat Position Sensor, Seat Position Sensor harness is open or shorted, Seat Position Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 846

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0846 GMC Description

The telescoping steering column actuator and seat adjuster motors are equipped with position sensors. The position sensors are supplied with a common 5-volt reference circuit and low reference circuit from the memory seat module. The memory seat module receives a signal voltage from each position sensor whenever a memory seat module output function is active.

OBDII Code B0846 GMC - Seat Position Sensor Circuit - AutoCodes.com — B0846 GMC Code - Seat Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B0846 GMC?

Faulty Seat Position Sensor
Seat Position Sensor harness is open or shorted
Seat Position Sensor circuit poor electrical connection
Faulty Memory Seat Module

How to Fix the DTC B0846 GMC?

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 B0846 GMC 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 B0846 GMC Code

1. What are the common symptoms of OBDII code B0846 GMC (Seat Position Sensor Circuit)?

The common symptoms include malfunctioning power seat adjustments, erratic seat movements, and inoperative memory settings.

2. What causes the OBDII code B0846 GMC to trigger?

The code is typically triggered by a faulty seat position sensor, damaged wiring or connectors related to the sensor, or a problem with the seat control module.

3. How can I diagnose the issue related to the Seat Position Sensor Circuit?

Diagnose the issue by checking the wiring and connectors for any visible damage, testing the seat position sensor for proper functionality, and scanning the seat control module for fault codes.

4. Can I repair the OBDII code B0846 GMC issue myself?

If you have the necessary tools and expertise, you may be able to repair the issue yourself by replacing the faulty seat position sensor, repairing damaged wiring or connectors, or reprogramming the seat control module.

5. Is it safe to drive with the OBDII code B0846 GMC active?

It is generally safe to drive with this code active, but it is recommended to address the issue promptly to avoid any inconvenience related to seat adjustments or potential safety concerns.

6. How much does it cost to repair the OBDII code B0846 GMC (Seat Position Sensor Circuit)?

The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $400, including parts and labor.

7. Can resetting the OBDII code B0846 GMC resolve the issue?

Resetting the code may temporarily clear it, but if the underlying issue is not addressed, the code is likely to reappear. It is best to diagnose and repair the root cause of the problem.

8. Are there any common DIY fixes for the OBDII code B0846 GMC?

Common DIY fixes include checking and securing the wiring and connectors, ensuring proper sensor alignment, and performing a reset of the seat control module.

9. Will the OBDII code B0846 GMC affect the vehicle's overall performance?

The code is related to the seat position sensor circuit and is unlikely to directly impact the vehicle's overall performance, but it may affect the convenience and functionality of the power seat adjustments.

10. How can I prevent the OBDII code B0846 GMC from recurring in the future?

To prevent the code from recurring, regularly inspect and maintain the seat position sensor, wiring, and connectors, and address any issues promptly to avoid further damage or malfunction.