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B2123 Chrysler Code - Ignition Run Control Circuit High

Quick Answer

The B2123 Chrysler code refers to an issue with the Ignition Run Control Circuit being detected as high. Common causes include Faulty ignition control module, Damaged wiring harness, Defective ignition switch. 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 Chrysler indicates Ignition Run Control Circuit High.
Common causes
Common causes include Faulty ignition control module, Damaged wiring harness, Defective ignition switch.
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 11, 2024
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Code B2123 Chrysler Description

The B2123 Chrysler code refers to an issue with the Ignition Run Control Circuit being detected as high. This means that there is a problem with the circuit responsible for controlling the ignition system during the vehicle's running operation. The ignition system plays a crucial role in starting the engine and maintaining its operation while the vehicle is in motion.

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

Common Causes of B2123 Chrysler

  1. Faulty ignition control module
  2. Damaged wiring harness
  3. Defective ignition switch
  4. Loose or corroded electrical connections
  5. Issues with the vehicle's computer system

Symptoms of B2123 Chrysler

  1. Engine misfires or rough idling
  2. Difficulty starting the engine
  3. Engine stalling while driving
  4. Loss of power or acceleration
  5. Illumination of the Check Engine Light

How to Fix B2123 Chrysler

  1. Diagnose the issue using a scan tool to retrieve the trouble code and perform a thorough inspection of the ignition system components.
  2. Check the wiring harness for any damage or loose connections, repairing or replacing as needed.
  3. Test the ignition control module and ignition switch for proper functionality, replacing them if found to be faulty.
  4. Clear the trouble code from the vehicle's computer system and test the ignition system to ensure proper operation.
  5. Perform a final road test to verify that the issue has been resolved and that the vehicle is running smoothly.

Cost to Fix B2123 Chrysler

The typical repair costs for addressing the B2123 Chrysler code can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships and lower at independent shops.

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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 Chrysler Code

1. What does the OBDII code B2123 mean for a Chrysler?

Code B2123 indicates a high voltage issue in the Ignition Run Control Circuit, which may affect the vehicle's ignition system functionality.

2. What are the common symptoms of the B2123 code?

Symptoms include difficulty starting the engine, stalling, erratic ignition behavior, or the vehicle not recognizing the ignition key.

3. What causes the B2123 code to appear?

Potential causes include a faulty ignition switch, damaged wiring or connectors in the ignition run circuit, or a malfunctioning body control module (BCM).

4. How do I diagnose the B2123 code?

Use a scan tool to retrieve the code, inspect the ignition switch and wiring for visible damage, and test the circuit voltage levels to identify abnormalities.

5. Can I drive my car with the B2123 code active?

Driving with this code is not recommended, as it may lead to stalling or starting issues, leaving you stranded.

6. How is the B2123 code typically fixed?

Repairs may involve replacing a faulty ignition switch, repairing damaged wiring or connectors, or reprogramming/updating the BCM if needed.

7. How much does it cost to fix the B2123 code on a Chrysler?

Repair costs vary depending on the issue, ranging from $100 for minor wiring fixes to $500 or more for ignition switch or BCM replacement.

8. Can a weak battery cause the B2123 code?

While unlikely, a weak or failing battery could contribute to electrical issues affecting the ignition circuit, so it’s worth checking.

9. How can I prevent the B2123 code from recurring?

Regularly inspect and maintain the vehicle’s electrical system, including the ignition switch and wiring, to prevent future issues.

10. Do I need a professional to fix the B2123 code?

While basic inspections can be done at home, diagnosing and repairing this code often requires specialized tools and expertise, so consulting a professional is recommended.

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