U1247 Code - Invalid Or Missing Data For Primary Id
Quick Answer
The diagnostic trouble code U1247 indicates that there is invalid or missing data for the primary identification (ID) in the vehicle's system. Common causes include Faulty Control Module: A malfunctioning control module can disrupt communication between modules, Wiring Issues: Damaged or corroded wiring harnesses can prevent proper data transmission, Loose Connections: Loose connections between modules or wiring can lead to data errors. 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
- U1247 indicates Invalid Or Missing Data For Primary Id.
- Common causes
- Common causes include Faulty Control Module: A malfunctioning control module can disrupt communication between modules, Wiring Issues: Damaged or corroded wiring harnesses can prevent proper data transmission, Loose Connections: Loose connections between modules or wiring can lead to data errors.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code U1247 Description
The diagnostic trouble code U1247 indicates that there is invalid or missing data for the primary identification (ID) in the vehicle's system. This code is typically associated with communication issues between different control modules within the vehicle, such as the Engine Control Module (ECM), Transmission Control Module (TCM), Body Control Module (BCM), or other electronic components. When data is missing or invalid, it can lead to a variety of issues with the vehicle's performance and functionality.
Common Causes of U1247
- Faulty Control Module: A malfunctioning control module can disrupt communication between modules.
- Wiring Issues: Damaged or corroded wiring harnesses can prevent proper data transmission.
- Loose Connections: Loose connections between modules or wiring can lead to data errors.
- Software Glitches: Software issues within the control modules can cause data discrepancies.
- Faulty Primary ID Module: A defective Primary ID module can trigger this code.
Symptoms of U1247
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Erratic Behavior: The vehicle may exhibit erratic behavior such as stalling, rough idling, or inconsistent acceleration.
- Transmission Issues: Problems with shifting gears or transmission slipping may occur.
- Reduced Performance: The vehicle may experience a decrease in performance or power.
- Inability to Start: In severe cases, the vehicle may not start at all due to the communication issues between modules.
How to Fix U1247
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and pinpoint the source of the communication problem.
- Inspect Wiring: Check the wiring harnesses for any damage or corrosion and repair or replace as needed.
- Check Connections: Ensure all connections between modules are secure and tight.
- Test Control Modules: Test the control modules for functionality and replace any faulty modules.
- Clear Codes: Clear the trouble codes after repairs are completed and test drive the vehicle to ensure the issue is resolved.
Cost to Fix U1247
The typical repair costs for addressing a U1247 code can vary depending on the specific cause of the issue. On average, you can expect to pay anywhere from $100 to $500 for parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on location, vehicle make and model, and engine type. It's recommended to check with local repair shops for a more accurate estimate based on your specific circumstances.
Need more information about the U1247 code?
Need more information on how to fix the U1247 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U1247 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U1247 Code
No Frequently Asked Questions about U1247 Code found.
Discuss the causes and fixes for U1247 OBDII Code
Code U1247 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.