AutoCodes – Chrysler – B2105 Chrysler

B2105 Chrysler Code - Ignition Unlock Run/Start Control Circuit High

Quick Answer

The Front Control Module monitors the Ignition Unlock Run/Start Control Circuit. Common causes include Faulty Shifter Lever Assembly, Shifter Lever Assembly harness is open or shorted, Shifter Lever Assembly 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: B2105 Chrysler indicates Ignition Unlock Run/Start Control Circuit High.
Common causes: Common causes include Faulty Shifter Lever Assembly, Shifter Lever Assembly harness is open or shorted, Shifter Lever Assembly 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 2,113

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 Sep 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2105 Chrysler Description

The Front Control Module monitors the Ignition Unlock Run/Start Control Circuit. The Front Control Module will set this Diagnostic Trouble Code (DTC) within 2 seconds if the ignition unlock run/start circuit voltage is not what the expected value should be.

OBDII Code B2105 Chrysler - Ignition Unlock Run/Start Control Circuit High - AutoCodes.com — B2105 Chrysler Code - Ignition Unlock Run/Start Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B2105 Chrysler?

Faulty Shifter Lever Assembly
Shifter Lever Assembly harness is open or shorted
Shifter Lever Assembly circuit poor electrical connection
Faulty Front Control Module (FCM)

How to Fix the DTC B2105 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 B2105 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.

Need more information about the B2105 Chrysler code?

Need more information on how to fix the B2105 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2105 Chrysler code diagnosed by a professional: Find a repair shop in your area

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 B2105 Chrysler Code

1. What are the common symptoms of OBDII code B2105 in a Chrysler vehicle?

- Common symptoms include difficulty starting the vehicle, inability to turn the ignition key, and the steering wheel being locked in place.

2. What are the possible causes of the Ignition Unlock Run/Start Control Circuit High code in a Chrysler?

- The code B2105 can be caused by issues with the ignition switch, a faulty ignition lock cylinder, wiring issues, or a malfunctioning body control module.

3. How can I diagnose the B2105 code in my Chrysler?

- To diagnose the issue, it is recommended to use a diagnostic scanner to read the code, perform a visual inspection of the wiring, check the ignition switch, and test the body control module.

4. Can I still drive my Chrysler with the B2105 code present?

- It is not recommended to drive the vehicle with the B2105 code present, as it can lead to potential safety hazards and further damage to the ignition system.

5. How can I repair the Ignition Unlock Run/Start Control Circuit High issue in my Chrysler?

- Repair options include replacing the ignition switch, fixing any wiring issues, replacing the ignition lock cylinder, or reprogramming the body control module if necessary.

6. Will resetting the OBDII code B2105 make it go away permanently?

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

7. Can a DIY enthusiast fix the B2105 code issue in a Chrysler?

- Depending on the root cause, some DIY enthusiasts may be able to address the B2105 code by following repair guides and using appropriate tools, but complex issues may require professional assistance.

8. Is the B2105 code specific to Chrysler vehicles only?

- While the B2105 code is commonly associated with Chrysler vehicles, it may also appear in other vehicle makes and models with similar ignition system components.

9. How much can I expect to pay for a professional repair of the B2105 code in my Chrysler?

- Repair costs for the B2105 code can vary depending on the specific issue, location, and labor rates, but it is advisable to budget for diagnostic fees, parts, and labor.

10. Can a faulty battery or alternator cause the B2105 code to trigger in a Chrysler?

- While a faulty battery or alternator can potentially cause electrical issues, the B2105 code is more commonly linked to problems with the ignition system components themselves.