B3855 Pontiac 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 Pontiac 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 Pontiac Description
What are the Possible Causes of the DTC B3855 Pontiac?
- 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 Pontiac?
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 Pontiac 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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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 Pontiac Code
1. What are the common symptoms of OBDII code B3855 (Rollover Sensor Performance) in a Pontiac?
- The common symptoms include the airbag warning light staying illuminated on the dashboard and a potential loss of function in the vehicle's safety systems.
2. What can cause the OBDII code B3855 to trigger in a Pontiac?
- The code B3855 can be triggered due to a malfunction or failure in the rollover sensor, which is responsible for detecting a potential rollover event and deploying the necessary safety measures.
3. How can I diagnose the cause of OBDII code B3855 in my Pontiac?
- Diagnosing the cause of code B3855 usually involves using a professional OBDII scanner to retrieve the specific fault codes and then inspecting the rollover sensor and its wiring for any visible damage or issues.
4. Is it safe to continue driving my Pontiac with the OBDII code B3855 present?
- It is not recommended to drive the vehicle with the code B3855 present, as it indicates a potential issue with the rollover sensor, which plays a crucial role in the vehicle's safety systems.
5. Can I reset the OBDII code B3855 in my Pontiac without fixing the underlying issue?
- While you can clear the code temporarily by resetting the vehicle's computer, it is important to address the underlying issue causing the B3855 code to ensure the proper functioning of the safety systems.
6. How can I repair the OBDII code B3855 related to the Rollover Sensor Performance in my Pontiac?
- Repairing the B3855 code often involves inspecting and potentially replacing the rollover sensor if it is found to be faulty. Additionally, checking and repairing any damaged wiring associated with the sensor may be necessary.
7. Are there any DIY tips for troubleshooting the OBDII code B3855 in my Pontiac?
- DIY troubleshooting tips for the B3855 code include checking the sensor's connections, inspecting for any physical damage, and ensuring that the sensor is securely mounted in place.
8. Can a malfunctioning rollover sensor cause other issues in my Pontiac besides triggering the B3855 code?
- Yes, a malfunctioning rollover sensor can potentially affect the proper functioning of other safety systems in the vehicle, such as the airbag deployment and seat belt pretensioners.
9. How much does it typically cost to repair the OBDII code B3855 in a Pontiac related to the Rollover Sensor Performance?
- The cost of repairing the B3855 code can vary depending on the extent of the issue and whether the sensor needs to be replaced. Costs may include parts and labor expenses.
10. Is it necessary to visit a dealership or can an independent mechanic address the OBDII code B3855 in my Pontiac?
- An independent mechanic with experience in handling Pontiac vehicles should be able to address the OBDII code B3855 related to the rollover sensor performance, as long as they have the necessary diagnostic tools and expertise.
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