B2855 Code - Crash Zone Sensor Circuit Short
Quick Answer
The B2855 diagnostic trouble code (DTC) indicates a crash zone sensor circuit short in the vehicle's system. Common causes include Damaged wiring or connectors in the crash zone sensor circuit, Faulty crash zone sensor, Issues with the airbag control module. 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
- B2855 indicates Crash Zone Sensor Circuit Short.
- Common causes
- Common causes include Damaged wiring or connectors in the crash zone sensor circuit, Faulty crash zone sensor, Issues with the airbag control module.
- 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 B2855 Description
The B2855 diagnostic trouble code (DTC) indicates a crash zone sensor circuit short in the vehicle's system. Crash zone sensors are crucial components of a vehicle's safety system, as they are responsible for detecting impacts and deploying airbags to protect occupants in the event of a collision. When a crash zone sensor circuit short is detected, it means that there is an electrical issue within the sensor circuit that could potentially prevent the airbags from deploying properly in a crash.
Common Causes of B2855
- Damaged wiring or connectors in the crash zone sensor circuit
- Faulty crash zone sensor
- Issues with the airbag control module
- Corrosion or moisture in the sensor circuit
- Impact or collision that damaged the sensor or wiring
Symptoms of B2855
- Airbag warning light illuminated on the dashboard
- Inability to deploy airbags in a crash
- Intermittent or erratic airbag deployment
- Fault codes related to the airbag system stored in the vehicle's computer
- Vehicle may fail safety inspections due to airbag system malfunction
How to Fix B2855
- Diagnose the issue using a scan tool to retrieve the specific DTC and pinpoint the location of the circuit short.
- Inspect the wiring and connectors in the crash zone sensor circuit for damage or corrosion. Repair or replace any damaged components.
- Test the crash zone sensor for proper functionality and replace if necessary.
- Clear the DTC from the vehicle's computer and test the airbag system to ensure proper deployment.
- If the issue persists, further diagnosis may be required to identify any underlying issues with the airbag control module or other components.
Cost to Fix B2855
The typical repair costs for addressing a crash zone sensor circuit short can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $200 to $500, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue could range from $300 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific repairs required. Additionally, diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Code B2855 Information for Specific Makes
- B2855 Ford — Crash Zone Sensor Circuit Short
- B2855 Lincoln — Crash Zone Sensor Circuit Short
- B2855 Mazda — Crash Zone Sensor Circuit Short
- B2855 Mercury — Crash Zone Sensor Circuit Short
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 B2855 Code
1. What are the common symptoms of OBDII code B2855 (Crash Zone Sensor Circuit Short)?
- The common symptoms of this code may include the airbag warning light illuminating on the dashboard, the airbag system not deploying in a crash, and potential diagnostic trouble codes related to the crash zone sensor circuit.
2. What are the possible causes of OBDII code B2855?
- Possible causes of this code include a short circuit in the crash zone sensor circuit, damaged wiring or connectors in the airbag system, a malfunctioning crash zone sensor, or a faulty airbag control module.
3. How can I diagnose OBDII code B2855?
- Diagnosing this code typically involves using a professional OBDII scan tool to read the fault codes, conducting a visual inspection of the airbag system components for any visible damage, and performing electrical tests to check for continuity and shorts in the crash zone sensor circuit.
4. What are the repair options for OBDII code B2855?
- Repair options for this code may include repairing or replacing damaged wiring or connectors, replacing the malfunctioning crash zone sensor, resetting the airbag system, or reprogramming the airbag control module if necessary.
5. Is it safe to drive with OBDII code B2855?
- It is not recommended to drive with this code present, as it indicates a potential issue with the airbag system, which is a critical safety component in a vehicle. It is advised to address the problem promptly to ensure the airbags function properly in the event of a crash.
6. Can I reset OBDII code B2855 myself?
- While you may be able to clear the fault code using an OBDII scan tool, it is important to address the underlying issue causing the code to prevent it from recurring. If the problem is not resolved, the code is likely to return.
7. How much does it cost to repair OBDII code B2855?
- The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the damage, and whether any components need to be replaced. It is recommended to consult a professional mechanic for an accurate diagnosis and repair estimate.
8. How long does it take to repair OBDII code B2855?
- The repair time for this code can vary depending on the complexity of the issue and the availability of parts. Simple repairs like fixing wiring may take a shorter time, while replacing a sensor or module may require more labor.
9. Can OBDII code B2855 be intermittent?
- Yes, this code can sometimes be intermittent, meaning the issue may come and go. It is important to address intermittent codes promptly, as they can indicate underlying problems that need to be fixed to ensure the safety and functionality of the airbag system.
10. Will OBDII code B2855 cause my airbags to not deploy in a crash?
- Yes, if left unresolved, OBDII code B2855 can potentially cause the airbags not to deploy in a crash, as it indicates a fault in the crash zone sensor circuit, which is crucial for the proper functioning of the airbag system.
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