AutoCodes – Generic – B198B

B198B Code - All Door Secondary Unlock Control Circuit High

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Door Secondary Unlock Control Circuit. Common causes include Faulty Door Secondary Unlock Relay, Door Secondary Unlock Relay harness is open or shorted, Door Secondary Unlock 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: B198B indicates All Door Secondary Unlock Control Circuit High.
Common causes: Common causes include Faulty Door Secondary Unlock Relay, Door Secondary Unlock Relay harness is open or shorted, Door Secondary Unlock 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.

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Code Popularity 606

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 Aug 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B198B Description

The Totally Integrated Power Module (TIPM) monitors the Door Secondary Unlock Control Circuit. When the Secondary Unlock Low Side Driver circuit does not change from high to low for over 10 seconds., this code will set.

OBDII Code B198B - All Door Secondary Unlock Control Circuit High - AutoCodes.com — B198B Code - All Door Secondary Unlock Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B198B?

Faulty Door Secondary Unlock Relay
Door Secondary Unlock Relay harness is open or shorted
Door Secondary Unlock Relay circuit poor electrical connection
Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B198B?

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 B198B 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 B198B code?

Need more information on how to fix the B198B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B198B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B198B Chrysler — All Door Secondary Unlock Control Circuit High
B198B Dodge — All Door Secondary Unlock Control Circuit High
B198B Jeep — All Door Secondary Unlock Control Circuit High
B198B RAM — All Door Secondary Unlock Control Circuit High

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 B198B Code

1. What are the common symptoms of OBDII code B198B (All Door Secondary Unlock Control Circuit High)?

- Common symptoms include difficulty unlocking all doors, inconsistent door unlocking, and unresponsive door locks.

2. What causes the OBDII code B198B to trigger?

- This code is typically triggered by a high voltage condition in the all door secondary unlock control circuit.

3. How can I diagnose the issue causing OBDII code B198B?

- To diagnose the issue, you can use a diagnostic scanner to read the code and then perform a visual inspection of the wiring and connectors in the all door secondary unlock control circuit.

4. What are some possible repair tips for fixing OBDII code B198B?

- Repair tips may include checking and repairing any damaged wiring or connectors in the all door secondary unlock control circuit, and ensuring all connections are secure.

5. Is it safe to continue driving with OBDII code B198B present?

- It is generally safe to continue driving with this code, but it is important to address the issue promptly to avoid potential inconvenience or security concerns related to door unlocking.

6. Can OBDII code B198B be intermittent or sporadic?

- Yes, this code can sometimes be intermittent or sporadic, causing the symptoms to come and go unpredictably.

7. Is OBDII code B198B easy to repair at home, or should I seek professional help?

- The repair for this code may require some electrical knowledge and tools, so if you are not comfortable working with automotive electrical systems, it is recommended to seek professional help.

8. Are there any common mistakes to avoid when addressing OBDII code B198B?

- One common mistake to avoid is overlooking simple causes like loose connections or blown fuses when diagnosing and repairing this code.

9. Will resetting the OBDII code B198B turn off the check engine light?

- While resetting the code may temporarily turn off the check engine light, it is important to address the underlying issue causing the code to prevent it from reoccurring.

10. How can I prevent OBDII code B198B from coming back after repairing it?

- To prevent the code from coming back, ensure all repairs are done correctly, use high-quality replacement parts, and perform regular maintenance checks on the vehicle's door locking system.