B0081:71 Code - Passenger Presence Module Malfunction Invalid Serial Data Received
Quick Answer
When the ignition is turned ON, the Passenger Presence Module and the Inflatable Restraint Sensing and Diagnostic Module perform tests to diagnose critical malfunctions within itself. Common causes include Faulty Passenger Presence Module, Passenger Presence Module harness is open or shorted, Passenger Presence Module 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
- B0081:71 indicates Passenger Presence Module Malfunction Invalid Serial Data Received.
- Common causes
- Common causes include Faulty Passenger Presence Module, Passenger Presence Module harness is open or shorted, Passenger Presence Module 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 B0081:71 Description
What are the Possible Causes of the DTC B0081:71?
- Faulty Passenger Presence Module
- Passenger Presence Module harness is open or shorted
- Passenger Presence Module circuit poor electrical connection
- Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)
How to Fix the DTC B0081:71?
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.
Code Tech Notes
B0081:11 Passenger Presence Module Above Threshold (Build Check Failure) (sets in the Passenger Presence Module)
B0081:3A Passenger Presence Module Incorrect Component Installed (sets in the Inflatable Restraint Sensing and Diagnostic Module)
B0081:4B Passenger Presence Module Calibration Not Learned (sets in the Passenger Presence Module)
B0081:5A Passenger Presence Module Plausibility Failure (sets in the Passenger Presence Module)
B0081:71 Passenger Presence Module Invalid Serial Data Received (sets in Inflatable Restraint Sensing and Diagnostic Module)
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0081:71 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 B0081:71 Code
1. What are common symptoms of OBDII code B0081:71?
- Common symptoms include the airbag warning light illuminating on the dashboard, the passenger airbag system not functioning properly, and potential diagnostic trouble codes related to the passenger presence module.
2. What causes the OBDII code B0081:71 Passenger Presence Module Malfunction Invalid Serial Data Received?
- This code is typically triggered by a malfunction in the passenger presence module, which is responsible for detecting whether there is a passenger seated in the vehicle and if the passenger airbag should be activated.
3. How can I diagnose the issue related to OBDII code B0081:71?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific code, followed by inspecting the passenger presence module, its wiring, and connections for any signs of damage or corrosion.
4. Can a DIY enthusiast repair the Passenger Presence Module Malfunction Invalid Serial Data Received issue?
- Repairing this issue may require advanced knowledge and specialized tools, so it is recommended to consult a professional mechanic or dealership with experience in airbag systems to properly diagnose and repair the problem.
5. Is it safe to drive with the OBDII code B0081:71 present?
- It is not recommended to drive with this code present, as it indicates a malfunction in the passenger airbag system, which could potentially compromise the safety of passengers in the event of a collision.
6. How much does it typically cost to repair the Passenger Presence Module Malfunction issue?
- The cost of repair can vary depending on the extent of the damage and whether the module needs to be replaced. It is advisable to get a few quotes from reputable mechanics or dealerships to compare prices.
7. Are there any recalls or technical service bulletins related to OBDII code B0081:71?
- It is recommended to check with the vehicle manufacturer or authorized dealerships to inquire about any recalls or technical service bulletins related to this specific OBDII code to see if any repairs may be covered under warranty.
8. Can resetting the OBDII code B0081:71 temporarily fix the issue?
- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the malfunction in the passenger presence module. It is important to address the root cause of the problem.
9. How long does it typically take to repair the Passenger Presence Module Malfunction issue?
- The repair time can vary depending on the complexity of the issue and the availability of parts. It is best to consult with a professional mechanic to get an accurate estimate of the repair time.
10. Is it possible to prevent OBDII code B0081:71 from occurring in the future?
- While some issues related to the passenger presence module may be unavoidable, regular maintenance and inspections of the airbag system can help detect any potential problems early and prevent the recurrence of this specific OBDII code.
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