AutoCodes – RAM – B2185 RAM

B2185 RAM Code - Ignition Unlock Run/Start Control Circuit High

Quick Answer

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. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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: B2185 RAM indicates Ignition Unlock Run/Start Control Circuit High.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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 706

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 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2185 RAM Description

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 B2185 RAM - Ignition Unlock Run/Start Control Circuit High - AutoCodes.com — B2185 RAM Code - Ignition Unlock Run/Start Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B2185 RAM?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Front Control Module

How to Fix the DTC B2185 RAM?

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 B2185 RAM 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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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 B2185 RAM Code

1. What are the common symptoms of OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

The common symptoms include difficulty starting the vehicle, intermittent starting issues, and the engine stalling while driving.

2. What are the possible causes of OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

Possible causes include a faulty ignition switch, damaged wiring or connectors in the ignition system, or a defective ignition lock cylinder.

3. How can I diagnose OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

Diagnosis involves using a scan tool to retrieve the code, checking the ignition system components for damage or wear, and testing the circuit continuity with a multimeter.

4. Can a DIYer repair OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

While DIYers with experience in automotive electrical systems can attempt the repair, it is recommended to consult a professional technician for accurate diagnosis and repair.

5. Is it safe to continue driving with OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

It is not recommended to drive the vehicle with this code present, as it can lead to unpredictable engine behavior and potential stalling, posing a safety risk.

6. How much does it typically cost to repair OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

The cost of repair can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor.

7. What are some repair tips for addressing OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

Inspecting the ignition system components for visible damage, ensuring proper wiring connections, and testing the system thoroughly after repair are important repair tips.

8. Can a weak car battery cause OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

A weak car battery can contribute to electrical issues in the vehicle, potentially triggering this code. It is advisable to test the battery's condition during diagnosis.

9. How long does it typically take to repair OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

The repair duration can vary based on the complexity of the issue and the availability of replacement parts, but it may take anywhere from 1 to 3 hours.

10. Will resetting the OBDII system clear OBDII code B2185 RAM Ignition Unlock Run/Start Control Circuit High?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause.