AutoCodes – Generic – C123B

C123B Code - ESP System Control Too Long

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Electronic Stability Program (ESP) Dynamic Sensor. Common causes include Faulty Dynamic Sensor, Dynamic Sensor harness is open or shorted, Dynamic 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: C123B indicates ESP System Control Too Long.
Common causes: Common causes include Faulty Dynamic Sensor, Dynamic Sensor harness is open or shorted, Dynamic 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.

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Code Popularity 6,391

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 Aug 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C123B Description

The Anti-Lock Brake System (ABS) Module monitors the Electronic Stability Program (ESP) Dynamic Sensor. The ABS Module sets the OBDII code when the Dynamic Sensor is not to factory specifications.

OBDII Code C123B - ESP System Control Too Long - AutoCodes.com — C123B Code - ESP System Control Too Long

What does this mean?

What are the Possible Causes of the DTC C123B?

Faulty Dynamic Sensor
Dynamic Sensor harness is open or shorted
Dynamic Sensor circuit poor electrical connection
Faulty Anti-Lock Brake System (ABS) Module

How to Fix the DTC C123B?

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 C123B 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 C123B code?

Need more information on how to fix the C123B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C123B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C123B Chrysler — ESP System Control Too Long
C123B Dodge — ESP System Control Too Long
C123B Jeep — ESP System Control Too Long

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 C123B Code

1. What does OBDII code C123B mean?

- OBDII code C123B stands for "ESP System Control Too Long," indicating a fault in the Electronic Stability Program (ESP) system of the vehicle.

2. What are the common symptoms of OBDII code C123B?

- Common symptoms of code C123B may include the ESP warning light illuminating on the dashboard, stability control system malfunctions, and potential traction issues.

3. What are the possible causes of OBDII code C123B?

- The main causes of code C123B can be a faulty ESP module, damaged wheel speed sensors, wiring issues in the ESP system, or a malfunctioning steering angle sensor.

4. How can I diagnose OBDII code C123B?

- To diagnose code C123B, a professional diagnostic scanner is usually required to retrieve the specific fault codes within the ESP system and pinpoint the underlying issue.

5. Can I still drive my vehicle with OBDII code C123B?

- It is not recommended to drive the vehicle with code C123B present, as the Electronic Stability Program is a crucial safety feature that may not function properly, increasing the risk of accidents.

6. How can I repair OBDII code C123B?

- Repairing code C123B typically involves addressing the root cause, which could be replacing a faulty ESP module, repairing wiring connections, or fixing or replacing sensors within the ESP system.

7. Is it possible to reset OBDII code C123B without repairs?

- While you may be able to clear the code temporarily, it is crucial to address the underlying issue causing code C123B to prevent the problem from recurring and ensure the proper functioning of the ESP system.

8. Are there any DIY tips for fixing OBDII code C123B?

- DIY tips for addressing code C123B may include checking and cleaning the wheel speed sensors, inspecting wiring for damage, and ensuring proper connections in the ESP system.

9. How much does it cost to repair OBDII code C123B at a mechanic?

- The cost of repairing code C123B can vary depending on the specific issue and labor rates, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can OBDII code C123B affect other systems in the vehicle?

- While code C123B specifically relates to the ESP system, if left unresolved, it may affect other systems that rely on data from the ESP system, potentially leading to further complications.