U047C Code - Invalid Data Received From Restraints System Sensor 'L'
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 'L', Restraints System Sensor 'L' harness is open or shorted, Restraints System Sensor 'L' 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
- U047C indicates Invalid Data Received From Restraints System Sensor 'L'.
- Common causes
- Common causes include Faulty Restraints System Sensor 'L', Restraints System Sensor 'L' harness is open or shorted, Restraints System Sensor 'L' 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 U047C Description
What are the Possible Causes of the DTC U047C?
- Faulty Restraints System Sensor 'L'
- Restraints System Sensor 'L' harness is open or shorted
- Restraints System Sensor 'L' circuit poor electrical connection
How to Fix the DTC U047C?
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 U047C 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 U047C Code
1. What does the OBDII code U047C mean?
The code U047C indicates that the vehicle's control module has received invalid data from the Restraints System Sensor 'L'.
2. What are the common symptoms of code U047C?
Symptoms may include an illuminated check engine light or airbag warning light, malfunctioning seatbelt pretensioners, or disabled airbag systems.
3. What causes the U047C code to appear?
Common causes include a faulty Restraints System Sensor 'L', wiring or connector issues, a software glitch, or a failure in the control module.
4. Can I drive my car with the U047C code?
Driving with this code is not recommended, as it may indicate a problem with the vehicle's safety systems, potentially compromising occupant protection.
5. How do I diagnose the U047C code?
Diagnosis typically involves scanning for codes, inspecting the Restraints System Sensor 'L' and its wiring, and testing the communication between the sensor and control module.
6. How do I fix the U047C code?
Repairs may include replacing the faulty sensor, repairing damaged wiring or connectors, or updating the vehicle’s software.
7. Is the U047C code specific to certain car models?
No, U047C is a generic OBDII code, but the exact repair process may vary depending on the make and model of the vehicle.
8. How much does it cost to fix the U047C code?
Repair costs can vary widely, ranging from $100 for simple wiring repairs to $500 or more for sensor replacement or module reprogramming.
9. Can a dead battery cause the U047C code?
Yes, a weak or dead battery can cause communication issues between modules, potentially triggering the U047C code.
10. Will clearing the code fix the issue?
Clearing the code may turn off the warning light temporarily, but if the underlying issue isn’t resolved, the code will likely return.
Discuss the causes and fixes for U047C OBDII Code
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