U047B Code - Invalid Data Received From Restraints System Sensor 'K'
Quick Answer
A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Restraints System Sensor 'K', Restraints System Sensor 'K' harness is open or shorted, Restraints System Sensor 'K' 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
- U047B indicates Invalid Data Received From Restraints System Sensor 'K'.
- Common causes
- Common causes include Faulty Restraints System Sensor 'K', Restraints System Sensor 'K' harness is open or shorted, Restraints System Sensor 'K' 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 U047B Description
What are the Possible Causes of the DTC U047B?
- Faulty Restraints System Sensor 'K'
- Restraints System Sensor 'K' harness is open or shorted
- Restraints System Sensor 'K' circuit poor electrical connection
How to Fix the DTC U047B?
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 U047B 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 U047B Code
1. What are common symptoms of OBDII code U047B?
- Common symptoms include the airbag warning light illuminating on the dashboard, loss of communication with the restraint system sensor 'K', and potential issues with the airbag system.
2. What can cause the OBDII code U047B to appear?
- The code U047B can be triggered by a faulty restraint system sensor 'K', wiring issues, a loose connection, or a malfunction within the airbag system.
3. How can I diagnose the cause of OBDII code U047B?
- Diagnosing the cause of code U047B involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the wiring and connections to sensor 'K', and performing a thorough visual inspection of the airbag system components.
4. Can I drive my vehicle with OBDII code U047B present?
- It is not recommended to drive the vehicle with code U047B present, as it indicates a potential issue with the airbag system that could compromise safety in the event of a collision.
5. How can I repair OBDII code U047B?
- Repairing code U047B typically involves addressing the root cause of the issue, which may include replacing the faulty restraint system sensor 'K', repairing damaged wiring, or fixing any loose connections in the airbag system.
6. Will resetting the fault codes make OBDII code U047B disappear?
- Resetting the fault codes may temporarily clear the warning light associated with code U047B, but the underlying issue causing the fault code will still need to be diagnosed and repaired to prevent it from reoccurring.
7. Is it safe to attempt DIY repairs for OBDII code U047B?
- While some basic inspections and repairs can be done by DIY enthusiasts, dealing with airbag system components and sensors should be approached with caution due to safety concerns. It is recommended to seek professional help for such repairs.
8. What should I do if OBDII code U047B keeps coming back after repairs?
- If code U047B keeps reappearing after repairs have been made, it may indicate that the underlying issue was not fully resolved. A more thorough diagnosis and repair may be necessary to address the recurring problem.
9. Can a low battery voltage trigger OBDII code U047B?
- Yes, a low battery voltage can sometimes trigger code U047B due to communication issues between the vehicle's systems. Ensuring the battery is properly charged and functioning can help prevent false fault codes.
10. Are there any recalls related to OBDII code U047B?
- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recall information related to OBDII code U047B and the restraint system sensor 'K' to see if there are any known issues or remedies provided.
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