Engine-CodesMercury – C1949 Mercury

C1949 Mercury Code - Accelerometer Sensor Circuit Open

Quick Answer

The C1949 diagnostic trouble code for Mercury indicates a problem with the Accelerometer Sensor Circuit being open. Common causes include Damaged wiring or connectors in the accelerometer sensor circuit, Faulty accelerometer sensor, Corrosion or dirt buildup affecting the sensor's performance. 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
C1949 Mercury indicates Accelerometer Sensor Circuit Open.
Common causes
Common causes include Damaged wiring or connectors in the accelerometer sensor circuit, Faulty accelerometer sensor, Corrosion or dirt buildup affecting the sensor's performance.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code C1949 Mercury Description

The C1949 diagnostic trouble code for Mercury indicates a problem with the Accelerometer Sensor Circuit being open. The accelerometer sensor is a vital component in the vehicle's safety system, as it is responsible for detecting changes in acceleration and deceleration. This information is crucial for systems like stability control, traction control, and airbag deployment. When the circuit is open, it means that there is a break or interruption in the electrical connection between the sensor and the vehicle's computer.

OBDII Code C1949 Mercury - Accelerometer Sensor Circuit Open
C1949 Mercury Code - Accelerometer Sensor Circuit Open

Common Causes of C1949 Mercury

  1. Damaged wiring or connectors in the accelerometer sensor circuit.
  2. Faulty accelerometer sensor.
  3. Corrosion or dirt buildup affecting the sensor's performance.
  4. Issues with the vehicle's computer or control module.
  5. Electrical problems in the overall system.

Symptoms of C1949 Mercury

  1. ABS or traction control warning lights illuminate on the dashboard.
  2. Unusual or inconsistent behavior in stability control system.
  3. Traction control system may engage unexpectedly or not work at all.
  4. Airbag warning light may come on.

How to Fix C1949 Mercury

  1. Begin by conducting a thorough inspection of the accelerometer sensor circuit, checking for any visible damage or loose connections.
  2. Test the accelerometer sensor using a multimeter to determine if it is functioning correctly.
  3. If the sensor is faulty, it will need to be replaced with a new one.
  4. Repair or replace any damaged wiring or connectors in the circuit.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix C1949 Mercury

The cost of repairing the Accelerometer Sensor Circuit Open issue can vary depending on the specific cause of the problem and the make and model of the vehicle. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, one can expect to pay anywhere from $200 to $500 for this repair. However, it's important to note that these are just rough estimates and actual costs can vary based on individual circumstances and location. It's advisable to consult with a professional mechanic for a more accurate quote.

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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 C1949 Mercury Code

1. What are the common symptoms of OBDII code C1949 in a Mercury related to the Accelerometer Sensor Circuit Open?

- Common symptoms include the ABS light illuminating on the dashboard, trouble with traction control, and potential issues with the stability control system.

2. What could cause the Accelerometer Sensor Circuit Open fault code C1949 in a Mercury?

- Possible causes include a damaged or faulty accelerometer sensor, wiring issues in the sensor circuit, or a malfunction in the stability control module.

3. How can I diagnose the Accelerometer Sensor Circuit Open problem in my Mercury with code C1949?

- To diagnose this issue, you may need to use a diagnostic scanner to read the fault codes and perform a physical inspection of the sensor and wiring for any visible damage.

4. Can I drive my Mercury with OBDII code C1949 related to the Accelerometer Sensor Circuit Open?

- It is not recommended to drive your vehicle with this fault code, as it could affect the proper functioning of important safety systems like ABS and traction control.

5. What are some repair tips for fixing the Accelerometer Sensor Circuit Open issue in a Mercury?

- Repair tips include checking and repairing any damaged wiring, replacing the faulty accelerometer sensor, or recalibrating the stability control system as needed.

6. Is it possible to reset the OBDII code C1949 related to the Accelerometer Sensor Circuit Open in a Mercury?

- Resetting the code may temporarily clear the fault, but it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the Accelerometer Sensor Circuit Open problem in a Mercury?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic fees.

8. Are there any safety concerns associated with OBDII code C1949 in a Mercury?

- Yes, driving with this fault code present can compromise the functioning of safety systems, so it is essential to address the issue promptly to ensure safe operation of the vehicle.

9. Can a DIY enthusiast fix the Accelerometer Sensor Circuit Open fault code C1949 in a Mercury?

- While some may attempt DIY repairs, it is recommended to have this issue diagnosed and repaired by a qualified mechanic or technician familiar with ABS and stability control systems.

10. How long does it typically take to repair the Accelerometer Sensor Circuit Open fault code C1949 in a Mercury?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair work involved, so it's best to consult with a professional for an accurate estimate.

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