AutoCodes – Chevrolet – B1845 2014 Chevrolet Silverado

B1845 2014 Chevrolet Silverado Code - Driver Seat Lumbar Down Switch Circuit

Quick Answer

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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: B1845 2014 Chevrolet Silverado indicates Driver Seat Lumbar Down Switch Circuit.
Common causes: Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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 196

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Apr 24, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1845 2014 Chevrolet Silverado Description

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. When the power seat or lumbar switches are pressed, the appropriate signal circuit from the Seat Memory Control Module is pulled low through the switch contacts indicating the power seat command. The Seat Memory Control Module then commands the driver seat or lumbar to move in response to the switch signals. The Diagnostic Trouble Code (DTC) will be set when there is a short to ground on a switch signal circuit.

OBDII Code B1845 2014 Chevrolet Silverado - Driver Seat Lumbar Down Switch Circuit - AutoCodes.com — B1845 2014 Chevrolet Silverado Code - Driver Seat Lumbar Down Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1845 2014 Chevrolet Silverado?

Faulty Driver Seat Adjuster Switch
Driver Seat Adjuster Switch harness is open or shorted
Driver Seat Adjuster Switch circuit poor electrical connection
Faulty Seat Memory Control Module

How to Fix the DTC B1845 2014 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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1845 2014 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.

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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 B1845 2014 Chevrolet Silverado Code

1. What does the OBDII code B1845 mean for a 2014 Chevrolet Silverado?

The code B1845 indicates an issue with the driver seat lumbar down switch circuit, such as an open, short, or malfunction in the electrical wiring or components.

2. What are the symptoms of code B1845 in a 2014 Chevrolet Silverado?

Symptoms may include the lumbar support not moving downward as expected, limited seat adjustment functionality, or no response when the lumbar down switch is pressed.

3. What causes the B1845 code in a 2014 Chevrolet Silverado?

Common causes include a faulty lumbar down switch, damaged wiring or connectors in the circuit, or an issue with the seat control module.

4. Can I still drive my Silverado with the B1845 code?

Yes, the vehicle is still drivable, but the lumbar adjustment feature for the driver seat may not work properly, potentially impacting comfort.

5. How do I diagnose a B1845 code in my Silverado?

Start by inspecting the lumbar down switch, wiring, and connectors for damage or loose connections. Use a scan tool to verify the code and test the seat control module functionality.

6. How can I fix the B1845 code in my 2014 Chevrolet Silverado?

Repairs may involve replacing the lumbar down switch, repairing damaged wiring or connectors, or reprogramming or replacing the seat control module if necessary.

7. Is the B1845 code a common issue in the 2014 Silverado?

While not extremely common, issues with the lumbar adjustment system do occur and can trigger this code, especially in vehicles with heavy seat usage.

8. How much does it cost to repair the B1845 code?

Repair costs can vary depending on the issue. Replacing a switch may cost around $50â€“$150, while more extensive repairs involving wiring or modules could be more expensive.

9. Can I reset the B1845 code without fixing the problem?

Clearing the code with a scan tool may temporarily remove it, but if the underlying issue isnâ€™t resolved, the code will likely return.

10. Does the B1845 code affect other seat functions?

In most cases, this code specifically affects the lumbar down adjustment. However, if the issue lies in the seat control module, it might impact other seat functions as well.