B2123 Chrysler Code - Ignition Run Control Circuit High
Quick Answer
The Front Control Module monitors the Ignition Run Control Circuit. Common causes include Faulty Run Relay, Run Relay harness is open or shorted, Run Relay 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
- B2123 Chrysler indicates Ignition Run Control Circuit High.
- Common causes
- Common causes include Faulty Run Relay, Run Relay harness is open or shorted, Run Relay 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.
Code B2123 Chrysler Description
What are the Possible Causes of the DTC B2123 Chrysler?
- Faulty Run Relay
- Run Relay harness is open or shorted
- Run Relay circuit poor electrical connection
- Faulty Front Control Module (FCM)
How to Fix the DTC B2123 Chrysler?
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 B2123 Chrysler 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.
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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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