AutoCodes – Mercury – B11EB Mercury

B11EB Mercury Code - Rear HVAC Temperature Control Input Circuit Short

Quick Answer

Under normal operation, the rear auxiliary control is supplied a 5-volt reference and ground from the Heating, Ventilation, and Air-Conditioning (HVAC) Module. Common causes include Faulty Rear HVAC Temperature Control, Rear HVAC Temperature Control harness is open or shorted, Rear HVAC Temperature Control 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: B11EB Mercury indicates Rear HVAC Temperature Control Input Circuit Short.
Common causes: Common causes include Faulty Rear HVAC Temperature Control, Rear HVAC Temperature Control harness is open or shorted, Rear HVAC Temperature Control 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 975

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 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B11EB Mercury Description

Under normal operation, the rear auxiliary control is supplied a 5-volt reference and ground from the Heating, Ventilation, and Air-Conditioning (HVAC) Module. When the auxiliary blower motor speed, airflow mode or temperature control is adjusted, the HVAC module reads the voltage from the rear auxiliary climate controls on the auxiliary blower motor speed, airflow mode, and temperature control feedback circuits to determine the requested setting. The OBDII code sets when the HVAC module senses an open, or short to ground or voltage on the rear auxiliary climate controls blower speed input circuit.

OBDII Code B11EB Mercury - Rear HVAC Temperature Control Input Circuit Short - AutoCodes.com — B11EB Mercury Code - Rear HVAC Temperature Control Input Circuit Short

What does this mean?

What are the Possible Causes of the DTC B11EB Mercury?

Faulty Rear HVAC Temperature Control
Rear HVAC Temperature Control harness is open or shorted
Rear HVAC Temperature Control circuit poor electrical connection
Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module

How to Fix the DTC B11EB 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

B11EB:11 Rear HVAC Temperature Control Input Circuit Short to Ground
B11EB:15 Rear HVAC Temperature Control Input Circuit Short to Battery or Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B11EB 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 B11EB Mercury Code

1. What are the common symptoms of OBDII code B11EB in a Mercury related to the Rear HVAC Temperature Control Input Circuit Short?

- Common symptoms include erratic rear HVAC temperature control, inaccurate temperature readings, and the rear HVAC system not responding properly.

2. What are the typical causes of the B11EB OBDII code in a Mercury?

- The code B11EB usually indicates a short circuit in the rear HVAC temperature control input circuit, which can be caused by damaged wiring, a faulty temperature sensor, or a malfunctioning control module.

3. How can I diagnose the Rear HVAC Temperature Control Input Circuit Short in my Mercury to confirm the B11EB code?

- You can diagnose the issue by inspecting the wiring for any visible damage, testing the temperature sensor for proper resistance values, and using a scan tool to check the functionality of the control module.

4. Are there any quick repair tips for fixing the B11EB code related to the Rear HVAC Temperature Control Input Circuit Short in a Mercury?

- Quick repair tips include checking and repairing any damaged wiring, replacing the faulty temperature sensor or control module if needed, and clearing the code with a scanner after the repair.

5. Can I drive my Mercury with the B11EB OBDII code related to the Rear HVAC Temperature Control Input Circuit Short?

- It is not recommended to drive your Mercury with the B11EB code present, as it can affect the proper functioning of the rear HVAC system and may lead to discomfort or safety issues for passengers.

6. Is it possible to reset the B11EB OBDII code in a Mercury without fixing the Rear HVAC Temperature Control Input Circuit Short issue?

- While you can clear the code temporarily with a scan tool, it is crucial to address the root cause of the problem to prevent the code from reappearing and ensure the proper functioning of the rear HVAC system.

7. How much does it typically cost to repair the B11EB OBDII code related to the Rear HVAC Temperature Control Input Circuit Short in a Mercury?

- The repair cost can vary depending on the specific cause of the issue, but it may involve expenses for parts such as a new temperature sensor or control module, as well as labor charges for diagnosis and repair.

8. Will fixing the B11EB code in my Mercury improve the overall performance of the rear HVAC system?

- Yes, addressing the Rear HVAC Temperature Control Input Circuit Short issue indicated by the B11EB code will help restore the proper functioning of the rear HVAC system, allowing for accurate temperature control and better comfort for passengers.