AutoCodes – Mercury – B11E5 Mercury

B11E5 Mercury Code - Left HVAC Damper Position Sensor Circuit

Quick Answer

o rotate the temperature blend door actuator, the Heating, Ventilation, and Air Conditioning (HVAC) module supplies voltage and ground to the temperature blend door actuator through the door actuator motor circuits. Common causes include Faulty Left HVAC Damper Position Sensor, Left HVAC Damper Position Sensor harness is open or shorted, Left HVAC Damper 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: B11E5 Mercury indicates Left HVAC Damper Position Sensor Circuit.
Common causes: Common causes include Faulty Left HVAC Damper Position Sensor, Left HVAC Damper Position Sensor harness is open or shorted, Left HVAC Damper 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 1,279

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 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 B11E5 Mercury Description

o rotate the temperature blend door actuator, the Heating, Ventilation, and Air Conditioning (HVAC) module supplies voltage and ground to the temperature blend door actuator through the door actuator motor circuits. To reverse the temperature blend door actuator rotation, the HVAC module reverses the voltage and ground circuits.
The temperature blend door actuator feedback resistors are supplied a ground from the HVAC module by the temperature blend door actuator return circuits and a 5-volt reference voltage on the temperature blend door actuator reference circuits. The HVAC module reads the voltage on the temperature blend door actuator feedback circuits to determine the temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.
During an actuator calibration cycle, the HVAC module drives the temperature blend door until the door reaches both internal stops in the HVAC case. If the temperature blend door is temporarily obstructed or binding during a calibration cycle, the HVAC module may interpret this as the actual end of travel for the door. When this condition occurs and the HVAC module commands the actuator to its end of travel, the airflow may not be the expected temperature.

OBDII Code B11E5 Mercury - Left HVAC Damper Position Sensor Circuit - AutoCodes.com — B11E5 Mercury Code - Left HVAC Damper Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B11E5 Mercury?

Faulty Left HVAC Damper Position Sensor
Left HVAC Damper Position Sensor harness is open or shorted
Left HVAC Damper Position Sensor circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Module

How to Fix the DTC B11E5 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

B11E5:11 - Left HVAC Damper Position Sensor: Circuit Short to Ground
B11E5:15 - Left HVAC Damper Position Sensor: Circuit Short to Battery or Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B11E5 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 B11E5 Mercury Code

1. What are common symptoms of OBDII code B11E5 in a Mercury related to the Left HVAC Damper Position Sensor Circuit?

The common symptoms include inconsistent temperature control on the left side of the vehicle, unusual HVAC airflow patterns, and potential issues with the automatic climate control system.

2. What are some possible causes of the B11E5 OBDII code in a Mercury?

Potential causes of the B11E5 code can include a faulty left HVAC damper position sensor, wiring issues in the sensor circuit, a malfunctioning HVAC control module, or a problem with the HVAC blend door actuator.

3. How can I diagnose the B11E5 code related to the Left HVAC Damper Position Sensor Circuit in my Mercury?

Diagnosing the B11E5 code may involve using an OBDII scanner to retrieve the code, inspecting the left HVAC damper position sensor for any visible damage, checking the sensor circuit for continuity, and conducting a thorough inspection of the HVAC system components.

4. Can I repair the B11E5 OBDII code in my Mercury at home?

Depending on the exact cause of the B11E5 code, some repairs related to the Left HVAC Damper Position Sensor Circuit may be possible to perform at home. However, complex issues such as module replacements or wiring repairs may require professional assistance.

5. Are there any quick tips to troubleshoot the B11E5 code in my Mercury?

Quick troubleshooting tips for the B11E5 code may include checking the fuse related to the HVAC system, ensuring all HVAC controls are functioning properly, and inspecting the left HVAC damper position sensor and its wiring for any obvious issues.

6. Is it safe to continue driving my Mercury with the B11E5 OBDII code triggered?

While the B11E5 code may not directly affect the drivability of your Mercury, it is important to address the underlying HVAC system issue promptly to ensure proper climate control functionality and comfort while driving.

7. How much does it typically cost to repair the B11E5 code in a Mercury related to the Left HVAC Damper Position Sensor Circuit?

The cost of repairing the B11E5 code can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or seek professional assistance. Cost estimates can range from a few hundred to over a thousand dollars.

8. Can the B11E5 code be intermittent in nature, causing the symptoms to come and go?

Yes, the B11E5 code related to the Left HVAC Damper Position Sensor Circuit can sometimes be intermittent, leading to symptoms that may appear sporadically depending on the sensor's functionality and the HVAC system's operation.

9. Will resetting the OBDII codes clear the B11E5 code in my Mercury?

Resetting the OBDII codes may temporarily clear the B11E5 code, but if the underlying issue with the Left HVAC Damper Position Sensor Circuit is not addressed, the code is likely to return once the problem is detected again by the vehicle's diagnostics.

10. Is it possible to prevent the recurrence of the B11E5 OBDII code in my Mercury in the future?

Regular maintenance of the HVAC system, including checking and replacing air filters as needed, can help prevent issues that may trigger the B11E5 code related to the Left HVAC Damper Position Sensor Circuit. Additionally, addressing any HVAC system problems promptly can help avoid code recurrences.