AutoCodesRAM – B1B88 RAM

B1B88 RAM Code - Passenger Seat Weight Sensor 1 Right Rear Input Circuit Low

Quick Answer

If the module detects that the sensor input is less than 3.4 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. Common causes include Faulty Right Rear Passenger Seat Weight Sensor, Right Rear Passenger Seat Weight Sensor harness is open or shorted, Right Rear Passenger Seat Weight Sensor 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
B1B88 RAM indicates Passenger Seat Weight Sensor 1 Right Rear Input Circuit Low.
Common causes
Common causes include Faulty Right Rear Passenger Seat Weight Sensor, Right Rear Passenger Seat Weight Sensor harness is open or shorted, Right Rear Passenger Seat Weight Sensor 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 580
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 22, 2019
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Code B1B88 RAM Description

If the module detects that the sensor input is less than 3.4 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. This Diagnostic Trouble Code (DTC) will also set if the Seat Weight Sensor 5 Volt circuit is shorted to ground. However, this condition would prevent communication with the Occupant Classification Module (OCM) and cause a Lost Communication With OCM DTC to set in other modules. Also, this DTC will remain active after the condition that set this fault is no longer present. This condition is referred to as latching the DTC for the ignition cycle. Cycling the ignition key will change the status from active to stored if the condition that set the fault is no longer present.
OBDII Code B1B88 RAM - Passenger Seat Weight Sensor 1 Right Rear Input Circuit Low - AutoCodes.com
B1B88 RAM Code - Passenger Seat Weight Sensor 1 Right Rear Input Circuit Low

What are the Possible Causes of the DTC B1B88 RAM?

  • Faulty Right Rear Passenger Seat Weight Sensor
  • Right Rear Passenger Seat Weight Sensor harness is open or shorted
  • Right Rear Passenger Seat Weight Sensor circuit poor electrical connection
  • Faulty Occupant Classification Module (OCM)

How to Fix the DTC B1B88 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 B1B88 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 B1B88 RAM code?

Need more information on how to fix the B1B88 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B88 RAM code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1B88 RAM Code

What are the common symptoms of OBDII code B1B88 RAM?

- Common symptoms include the airbag warning light illuminating on the dashboard, issues with the passenger seat weight sensor, and potential airbag system malfunctions.

What can cause OBDII code B1B88 RAM to trigger?

- This code is typically triggered by a malfunction in the passenger seat weight sensor 1 right rear input circuit, which can be caused by damaged wiring, a faulty sensor, or a poor connection.

How can I diagnose the issue related to code B1B88 RAM?

- You can diagnose the issue by using a diagnostic scanner to retrieve the trouble code, inspecting the wiring and connections around the passenger seat weight sensor, and testing the sensor itself for proper functionality.

What are the repair options for OBDII code B1B88 RAM?

- Repair options may include repairing or replacing damaged wiring, fixing loose connections, replacing the passenger seat weight sensor, or reprogramming the airbag control module.

Is it safe to drive with OBDII code B1B88 RAM present?

- It is not recommended to drive with this code present, as it indicates a potential issue with the airbag system, which can compromise passenger safety in the event of a collision.

Can I reset OBDII code B1B88 RAM on my own?

- While you can clear the code with a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring and potentially endangering passengers.

How much does it cost to repair OBDII code B1B88 RAM?

- The cost of repairs for this code can vary depending on the extent of the issue, the necessary parts replacement, and the labor rates of the repair shop. It is advisable to get a few quotes from different mechanics.

Will OBDII code B1B88 RAM affect my vehicle's performance?

- This code is related to the airbag system and should not affect the overall performance of your vehicle. However, it is crucial to address the issue promptly to ensure the proper functioning of the safety systems.

Should I replace the passenger seat weight sensor myself for code B1B88 RAM?

- Replacing the passenger seat weight sensor can be a complex task that requires proper knowledge and tools. It is recommended to seek assistance from a qualified mechanic to ensure the repair is done correctly and safely.

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