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B2123 Dodge Code - Ignition Run Control Circuit High

Quick Answer

The B2123 diagnostic trouble code (DTC) for Dodge vehicles refers to the Ignition Run Control Circuit High. Common causes include Wiring issues, Faulty ignition switch, Defective ignition control module. 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
B2123 Dodge indicates Ignition Run Control Circuit High.
Common causes
Common causes include Wiring issues, Faulty ignition switch, Defective ignition control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B2123 Dodge Description

The B2123 diagnostic trouble code (DTC) for Dodge vehicles refers to the Ignition Run Control Circuit High. This code is typically triggered when the Engine Control Module (ECM) detects an unusually high voltage in the ignition run control circuit. The ignition run control circuit is responsible for controlling the power supply to the ignition system, which includes components such as the ignition coil, spark plugs, and the fuel injection system.

OBDII Code B2123 Dodge - Ignition Run Control Circuit High
B2123 Dodge Code - Ignition Run Control Circuit High

Common Causes of B2123 Dodge

  1. Wiring issues
  2. Faulty ignition switch
  3. Defective ignition control module
  4. Malfunctioning ECM
  5. Corrosion or loose connections in the circuit

Symptoms of B2123 Dodge

  1. Difficulty starting the engine
  2. Engine misfires
  3. Rough idling
  4. Poor acceleration
  5. Check Engine Light illuminated

How to Fix B2123 Dodge

  1. Begin by performing a thorough inspection of the ignition run control circuit, checking for any visible damage or loose connections.
  2. Use a multimeter to test the voltage in the circuit and identify any irregularities.
  3. If wiring issues are detected, repair or replace the damaged wires as necessary.
  4. Test the ignition switch and ignition control module for proper functionality and replace them if found to be faulty.
  5. Clear the DTC with a diagnostic scanner after completing the repairs and test the vehicle to ensure the issue has been resolved.

Cost to Fix B2123 Dodge

The cost of repairing the Ignition Run Control Circuit High issue can vary depending on the specific cause of the problem and the parts involved. On average, the repair costs for this issue can range from $100 to $500, including both parts and labor. However, it's important to note that labor rates at auto repair shops can vary significantly, and additional diagnostic time may be needed to pinpoint the exact cause of the code. It is recommended to contact local auto repair shops for a more accurate cost estimate based on the specific circumstances of your vehicle.

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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 B2123 Dodge Code

1. What are the common symptoms of OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- Common symptoms include the engine stalling or not starting, rough idling, and the Check Engine light being illuminated.

2. What causes the OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- The code is typically triggered by issues with the ignition run control circuit, such as a faulty ignition switch, damaged wiring, or a defective ignition run control relay.

3. How can I diagnose the OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- Diagnosing this code usually involves checking the ignition system components, inspecting the wiring for any damage or loose connections, and using a diagnostic scanner to read the code and identify the specific issue.

4. What are the possible repair tips for OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- Repairing this code may involve replacing the faulty ignition switch, repairing or replacing damaged wiring, or replacing the defective ignition run control relay.

5. Can I drive my vehicle with the OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- It is not recommended to drive your vehicle with this code, as it can lead to potential safety issues such as the engine stalling unexpectedly.

6. How much does it cost to repair OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- The cost of repairing this code can vary depending on the specific issue causing it and the labor rates of the repair shop. It is recommended to get a diagnostic inspection to determine the exact repair cost.

7. How long does it take to repair OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- The repair time for this code can vary based on the complexity of the issue and the availability of parts. It is best to consult with a professional mechanic for an accurate estimate of the repair time.

8. Can a DIY enthusiast fix the OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- While some DIY enthusiasts may be able to diagnose and repair this code, it is recommended to seek assistance from a professional mechanic, especially for complex electrical issues.

9. Will resetting the Check Engine light remove the OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- Simply resetting the Check Engine light will not fix the underlying issue causing the code. It is important to diagnose and repair the root cause of the problem to prevent it from reoccurring.

10. What are the long-term effects of ignoring OBDII code B2123 Dodge (Ignition Run Control Circuit High)?

- Ignoring this code can lead to more severe issues with your vehicle's ignition system, potentially causing further damage and safety risks. It is important to address the problem promptly to avoid costly repairs in the future.

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