B3855 Saturn Code - Rollover Sensor Performance
Quick Answer
The inflatable restraint vehicle Rollover Sensor (ROS) utilizes the battery power supply and a bidirectional interface circuit. Common causes include Faulty Rollover Sensor, Rollover Sensor harness is open or shorted, Rollover 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
- B3855 Saturn indicates Rollover Sensor Performance.
- Common causes
- Common causes include Faulty Rollover Sensor, Rollover Sensor harness is open or shorted, Rollover 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.
Code B3855 Saturn Description
What are the Possible Causes of the DTC B3855 Saturn?
- Faulty Rollover Sensor
- Rollover Sensor harness is open or shorted
- Rollover Sensor circuit poor electrical connection
- Faulty Sensing and Diagnostic Module (SDM)
How to Fix the DTC B3855 Saturn?
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 B3855 Saturn 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 B3855 Saturn code?
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Get the B3855 Saturn 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.
Frequently Asked Questions about B3855 Saturn Code
1. What does the OBDII code B3855 mean on a Saturn?
B3855 indicates an issue with the rollover sensor's performance, which is responsible for detecting potential vehicle rollovers.
2. What are the common symptoms of the B3855 code?
Symptoms may include the airbag warning light illuminating, instability in airbag system operation, or an inability to detect rollover scenarios properly.
3. What causes the B3855 code to appear?
This code can be triggered by a faulty rollover sensor, damaged wiring or connections, or a malfunction in the airbag control module.
4. Is it safe to drive with the B3855 code active?
While the vehicle may still be drivable, the safety systems like airbags may not function properly in a rollover situation. It’s best to address the issue promptly.
5. How can I diagnose the B3855 code on my Saturn?
Start by scanning the vehicle for codes with an OBDII scanner, then inspect the rollover sensor, wiring, and connectors for damage or corrosion.
6. Can I fix the B3855 code myself?
If you have basic automotive skills, you may be able to check and repair loose or corroded wiring. However, sensor replacement or airbag system repairs are best left to professionals.
7. How much does it cost to repair the B3855 code?
Repair costs can vary widely, with sensor replacement ranging from $200 to $500, depending on labor and parts pricing.
8. Does the B3855 code always indicate a sensor failure?
Not necessarily. It could also be caused by wiring issues, a faulty airbag control module, or even software glitches.
9. Will clearing the B3855 code with a scanner fix the issue?
Clearing the code may turn off the warning temporarily, but the root cause must be addressed to prevent the code from returning.
10. Can a weak battery cause the B3855 code?
While rare, a weak or failing battery can sometimes cause electrical issues that trigger false codes, including B3855. Ensure your battery is in good condition.
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