AutoCodes – Mercury – B1034 Mercury

B1034 Mercury Code - Left Front Seat Heater Element

Quick Answer

The engine must be running for the heated seat system to operate. Common causes include Faulty Left Front Seat Heater Element, Left Front Seat Heater Element harness is open or shorted, Left Front Seat Heater Element 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: B1034 Mercury indicates Left Front Seat Heater Element.
Common causes: Common causes include Faulty Left Front Seat Heater Element, Left Front Seat Heater Element harness is open or shorted, Left Front Seat Heater Element 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 1,135

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 Mar 11, 2021

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1034 Mercury Description

The engine must be running for the heated seat system to operate. The driver and passenger heated seat buttons are selected from the touchscreen interface, which initiates the CAN communication to request heated seat operation. Upon receiving the request, the Heating, Ventilation, and Air Conditioning (HVAC) Module supplies voltage to the appropriate driver and/or passenger seat cushion and backrest heater mats, which are connected in series. Temperature is maintained by the HVAC module using a sensor contained within the cushion heater mat. The HVAC module supplies a reference voltage to the temperature sensor and monitors the return signal from the temperature sensor for controlling current flow to the heater mats. The HVAC module remains on, heating the seat and maintaining temperature until commanded off from the touchscreen (or until the ignition is turned OFF).

OBDII Code B1034 Mercury - Left Front Seat Heater Element - AutoCodes.com — B1034 Mercury Code - Left Front Seat Heater Element

What does this mean?

What are the Possible Causes of the DTC B1034 Mercury?

Faulty Left Front Seat Heater Element
Left Front Seat Heater Element harness is open or shorted
Left Front Seat Heater Element circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Module

How to Fix the DTC B1034 Mercury?

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

B1034:11 Left Front Seat Heater Element: Circuit Short To Ground
B1034:13 Left Front Seat Heater Element: Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1034 Mercury 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 B1034 Mercury Code

1. What are the common symptoms of OBDII code B1034 Mercury related to the left front seat heater element?

The common symptoms include the left front seat heater not working or producing insufficient heat.

2. What are the potential causes of OBDII code B1034 Mercury for the left front seat heater element?

The code B1034 can be triggered by a faulty left front seat heater element, a damaged seat heater control module, or wiring issues.

3. How can I diagnose the issue causing OBDII code B1034 Mercury for the left front seat heater element?

You can start by checking the left front seat heater element for continuity using a multimeter and inspecting the wiring connections for any damage or corrosion.

4. Is it safe to continue driving with OBDII code B1034 Mercury related to the left front seat heater element?

It is generally safe to drive with this code, but it's recommended to address the issue promptly to ensure the proper functioning of the seat heater.

5. What is the typical repair for OBDII code B1034 Mercury for the left front seat heater element?

The typical repair involves replacing the faulty left front seat heater element or repairing any damaged wiring connections.

6. Can I fix OBDII code B1034 Mercury for the left front seat heater element myself?

If you have experience working with automotive electrical systems, you may be able to diagnose and fix the issue yourself. Otherwise, it's recommended to seek professional help.

7. Are there any preventive measures to avoid OBDII code B1034 Mercury for the left front seat heater element?

Regularly inspecting the seat heater elements and wiring connections for signs of damage or wear can help prevent this issue.

8. How much does it cost to repair OBDII code B1034 Mercury for the left front seat heater element?

The cost of repair can vary depending on the extent of the issue and whether you choose to do the repair yourself or take it to a professional mechanic.

9. Can OBDII code B1034 Mercury for the left front seat heater element affect other systems in the vehicle?

This code is specific to the left front seat heater element and should not directly affect other systems in the vehicle.

10. Is it possible for OBDII code B1034 Mercury for the left front seat heater element to recur after repair?

If the underlying cause of the code is not properly addressed during repair, it is possible for the code to recur. Be sure to diagnose the issue accurately to prevent recurrence.