AutoCodes – Generic – C1949

C1949 Code - Accelerometer Sensor Circuit Open

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Accelerometer Sensor Circuit. Common causes include Faulty Accelerometer Sensor Circuit, Accelerometer Sensor Circuit harness is open or shorted, Accelerometer Sensor Circuit 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: C1949 indicates Accelerometer Sensor Circuit Open.
Common causes: Common causes include Faulty Accelerometer Sensor Circuit, Accelerometer Sensor Circuit harness is open or shorted, Accelerometer Sensor Circuit 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.

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Code Popularity 17,935

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1949 Description

The Anti-Lock Brake System (ABS) Module monitors the Accelerometer Sensor Circuit. The ABS Module sets the OBDII code when the Accelerometer Sensor Circuit is not to factory specifications.

OBDII Code C1949 - Accelerometer Sensor Circuit Open - AutoCodes.com — C1949 Code - Accelerometer Sensor Circuit Open

What does this mean?

What are the Possible Causes of the DTC C1949?

Faulty Accelerometer Sensor Circuit
Accelerometer Sensor Circuit harness is open or shorted
Accelerometer Sensor Circuit circuit poor electrical connection

How to Fix the DTC C1949?

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 C1949 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 C1949 code?

Need more information on how to fix the C1949 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1949 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1949 Ford — Accelerometer Sensor Circuit Open
C1949 Lincoln — Accelerometer Sensor Circuit Open
C1949 Mercury — Accelerometer Sensor Circuit Open

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 Code

1. What are the common symptoms of OBDII code C1949 (Accelerometer Sensor Circuit Open)?

- Common symptoms include the ABS warning light coming on, traction control system malfunctions, and potential issues with the vehicle stability control.

2. What does the OBDII code C1949 indicate?

- OBDII code C1949 indicates a fault in the accelerometer sensor circuit, specifically an open circuit.

3. What are the possible causes of OBDII code C1949?

- Possible causes include damaged wiring or connectors in the accelerometer sensor circuit, a faulty accelerometer sensor, or issues with the ABS module.

4. How can I diagnose the cause of OBDII code C1949?

- Diagnosing the cause typically involves inspecting the wiring and connectors in the accelerometer sensor circuit, testing the accelerometer sensor itself, and checking for any related ABS system faults.

5. Can I drive my vehicle with OBDII code C1949?

- It is not recommended to drive your vehicle with OBDII code C1949, as it can affect the proper functioning of important safety systems like ABS and traction control.

6. How can I repair OBDII code C1949?

- Repairing OBDII code C1949 may involve repairing or replacing damaged wiring or connectors, replacing the faulty accelerometer sensor, or addressing any issues with the ABS module.

7. Will resetting the OBDII code C1949 make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return.

8. Are there any DIY fixes for OBDII code C1949?

- DIY fixes for this code may involve checking and repairing any visible wiring issues or connectors, but more complex repairs may require professional assistance.

9. How much does it typically cost to repair OBDII code C1949?

- The cost of repairing OBDII code C1949 can vary depending on the cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can OBDII code C1949 cause any safety concerns?

- Yes, OBDII code C1949 can potentially compromise the proper functioning of safety systems like ABS and traction control, so it is important to address the issue promptly to ensure safe driving conditions.