AutoCodes – Mercury – B1949 Mercury

B1949 Mercury Code - Climate Control Water Temperature Sensor Circuit Short To Ground

Quick Answer

The Dual Automatic Temperature Control (DATC) Module monitors the Climate Control Water Temperature Sensor. Common causes include Faulty Climate Control Water Temperature Sensor, Climate Control Water Temperature Sensor harness is open or shorted, Climate Control Water Temperature Sensor 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
B1949 Mercury indicates Climate Control Water Temperature Sensor Circuit Short To Ground.
Common causes
Common causes include Faulty Climate Control Water Temperature Sensor, Climate Control Water Temperature Sensor harness is open or shorted, Climate Control Water Temperature Sensor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 491
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 31, 2019
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code B1949 Mercury Description

The Dual Automatic Temperature Control (DATC) Module monitors the Climate Control Water Temperature Sensor. The DATC sets the OBDII code when the Climate Control Water Temperature Sensor is not to factory specifications.
OBDII Code B1949 Mercury - Climate Control Water Temperature Sensor Circuit Short To Ground - AutoCodes.com
B1949 Mercury Code - Climate Control Water Temperature Sensor Circuit Short To Ground

What are the Possible Causes of the DTC B1949 Mercury?

  • Faulty Climate Control Water Temperature Sensor
  • Climate Control Water Temperature Sensor harness is open or shorted
  • Climate Control Water Temperature Sensor circuit poor electrical connection
  • Faulty Dual Automatic Temperature Control (DATC)

How to Fix the DTC B1949 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1949 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.

Need more information about the B1949 Mercury code?

Need more information on how to fix the B1949 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1949 Mercury code diagnosed by a professional: Find a repair shop in your area

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 B1949 Mercury Code

1. What are the common symptoms of OBDII code B1949 in a Mercury related to the Climate Control Water Temperature Sensor Circuit Short To Ground?

- Common symptoms may include inaccurate temperature readings on the climate control system, erratic behavior of the heating or cooling system, or a malfunctioning temperature gauge on the dashboard.

2. What are the possible causes of the Climate Control Water Temperature Sensor Circuit Short To Ground in a Mercury triggering code B1949?

- Potential causes for this code include a damaged water temperature sensor, a short circuit in the wiring harness, or a faulty climate control module.

3. How can I diagnose the OBDII code B1949 in a Mercury for the Climate Control Water Temperature Sensor Circuit Short To Ground issue?

- Diagnosing this code involves using a scan tool to retrieve the trouble code, inspecting the wiring harness for any visible damage, and testing the water temperature sensor for proper functionality.

4. Is it safe to continue driving my Mercury with the OBDII code B1949 related to the Climate Control Water Temperature Sensor Circuit Short To Ground?

- It is not recommended to drive the vehicle with this code present, as it can lead to improper temperature regulation in the climate control system, potentially affecting the comfort and safety of the occupants.

5. How can I repair the Climate Control Water Temperature Sensor Circuit Short To Ground issue causing OBDII code B1949 in my Mercury?

- Repair options may include replacing the water temperature sensor, repairing any damaged wiring, or reprogramming the climate control module to correct the issue.

6. Can a DIY enthusiast fix the OBDII code B1949 related to the Climate Control Water Temperature Sensor Circuit Short To Ground in a Mercury?

- While some simple checks like inspecting the wiring harness can be done by a DIY enthusiast, diagnosing and repairing the underlying cause of this code may require advanced automotive knowledge and specialized tools.

7. What are the potential long-term effects of ignoring the OBDII code B1949 related to the Climate Control Water Temperature Sensor Circuit Short To Ground in a Mercury?

- Ignoring this code can lead to inefficient operation of the climate control system, potential damage to other components, and decreased overall comfort and safety while driving.

8. Can extreme weather conditions affect the triggering of OBDII code B1949 in a Mercury due to the Climate Control Water Temperature Sensor Circuit Short To Ground?

- Extreme temperatures or weather conditions can potentially exacerbate issues related to the water temperature sensor circuit, leading to the triggering of this OBDII code.

9. Are there any preventive maintenance steps I can take to avoid encountering the OBDII code B1949 related to the Climate Control Water Temperature Sensor Circuit Short To Ground in my Mercury?

- Regularly inspecting the climate control system, checking for any signs of wiring damage, and ensuring proper functioning of the temperature sensor can help prevent the occurrence of this code.

10. How long does it typically take to repair the OBDII code B1949 related to the Climate Control Water Temperature Sensor Circuit Short To Ground in a Mercury?

- The repair time can vary based on the exact cause of the issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem effectively.

Discuss the causes and fixes for B1949 Mercury OBDII Code

Code B1949 Mercury comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play