B198B RAM 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 RAM 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.
Code B198B RAM Description
What are the Possible Causes of the DTC B198B RAM?
- 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 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 B198B 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.
Need more information about the B198B RAM code?
Need more information on how to fix the B198B RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B198B RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B198B RAM Code
1. What does the OBDII code B198B mean for a RAM vehicle?
The B198B code indicates a problem with the "All Door Secondary Unlock Control Circuit," specifically that the circuit is experiencing a high voltage condition.
2. What are the common symptoms of the B198B code in a RAM vehicle?
Symptoms may include doors not unlocking properly, unresponsive key fob unlock functions, or intermittent issues with the power door locks.
3. What causes the B198B code to appear?
Possible causes include a faulty door lock actuator, damaged wiring or connectors in the unlock control circuit, or a malfunctioning body control module (BCM).
4. Can a weak battery cause the B198B code in a RAM vehicle?
Yes, a weak or failing battery can cause electrical issues, including triggering the B198B code, by disrupting proper voltage levels in the circuit.
5. How can I diagnose the B198B code in my RAM vehicle?
Start by inspecting the wiring and connectors for damage, test the door lock actuators, and use a multimeter to check circuit voltages. A scan tool may also help identify related issues.
6. Is the B198B code serious, and can I keep driving with it?
While not immediately critical, this code can affect door locking and unlocking functionality, potentially causing security concerns. Address it promptly to avoid further issues.
7. What repairs are typically needed to fix the B198B code?
Repairs may include replacing a faulty door lock actuator, repairing damaged wiring or connectors, or reprogramming or replacing the body control module if necessary.
8. How much does it cost to fix the B198B code on a RAM vehicle?
Repair costs can vary but typically range from $100 to $500, depending on whether the issue is with wiring, actuators, or the body control module.
9. Can I fix the B198B code myself on my RAM vehicle?
If you have experience with electrical systems, you can attempt basic repairs like inspecting and repairing wiring. However, more complex issues like BCM replacement may require professional help.
10. Will clearing the B198B code with a scan tool fix the problem?
Clearing the code may temporarily reset the warning, but the underlying issue must be diagnosed and repaired to prevent the code from returning.
Discuss the causes and fixes for B198B RAM OBDII Code
Code B198B RAM comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
