AutoCodes – Buick – U1241 Buick

U1241 Buick Code - Lost Communications With Scan Tool

Quick Answer

The Passenger Presence System (PPS) monitors itself for faults and will set flash diagnostic trouble codes if a fault is detected. Common causes include No cause, Cycle Ignition Key and Clear Code. 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: U1241 Buick indicates Lost Communications With Scan Tool.
Common causes: Common causes include No cause, Cycle Ignition Key and Clear Code.
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 Popularity 441

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 05, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U1241 Buick Description

The Passenger Presence System (PPS) monitors itself for faults and will set flash diagnostic trouble codes if a fault is detected. The PPS communicates with the inflatable restraint Sensing and Diagnostic Module (SDM) via non class 2 communications. When the SDM receives input from the PPS that a PPS fault has occurred, the SDM will request the instrument panel cluster (IPC) to turn the AIR BAG indicator located on the IPC ON. To determine what Diagnostic Trouble Code (DTC) have been set by the PPS, the Tech 2 is used to command the SDM to request the PPS to flash the DTCs using the PASSENGER AIR BAG ON/OFF indicators. The Tech 2 sends a string of commands to the SDM that allows the SDM to communicate with the PPS module and initiate the flashing of the DTCs. When the Tech 2 has completed sending the commands, the PPS will begin flashing any current or history DTCs that the system has stored. When the SDM no longer receives commands from the Tech 2, the SDM mistakes this as a communication fault and sets DTC U1241. DTC U1241 will set when the Tech 2 is used to flash DTCs from the PPS or after the PPS has been rezeroed. DTC U1241 does not indicate a system malfunction and will not cause any warning indicators to illuminate. When DTC U1241 sets, cycle the ignition and use the scan tool to clear the code, no further diagnosis is necessary.

OBDII Code U1241 Buick - Lost Communications With Scan Tool - AutoCodes.com — U1241 Buick Code - Lost Communications With Scan Tool

What does this mean?

What are the Possible Causes of the DTC U1241 Buick?

No cause. Cycle Ignition Key and Clear Code.

How to Fix the DTC U1241 Buick?

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 does this mean?

Code Tech Notes

The Diagnostic Trouble Code (DTC) U1241 does not indicate a system malfunction and will not cause any warning indicators to illuminate. When DTC U1241 sets, cycle the ignition and use the scan tool to clear the code, no further diagnosis is necessary.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1241 Buick 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.

Need more information about the U1241 Buick code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U1241 Buick Code

1. What does the OBDII code U1241 mean for my Buick?

The U1241 code indicates a communication problem between the vehicle's onboard computer system and the diagnostic scan tool.

2. What are the common symptoms of a U1241 code in a Buick?

Common symptoms include the check engine light illuminating, loss of communication with the diagnostic tool, and potential issues with vehicle performance or drivability.

3. What are the possible causes of a U1241 code in a Buick?

Potential causes include damaged wiring or connectors, a faulty diagnostic port, issues with the ECM (Engine Control Module), or a problem with the diagnostic scan tool itself.

4. How can I diagnose the U1241 code in my Buick?

Diagnosing the U1241 code typically involves checking the wiring and connectors for any damage, ensuring the diagnostic port is functioning correctly, and using a professional scan tool to communicate with the vehicle's ECM.

5. Can I still drive my Buick with a U1241 code present?

It is generally safe to drive your Buick with a U1241 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent any potential long-term problems.

6. How much does it cost to repair a U1241 code in a Buick?

The cost of repairing a U1241 code can vary depending on the specific cause of the issue. It is recommended to consult with a professional mechanic for an accurate estimate.

7. Are there any DIY repair tips for a U1241 code in a Buick?

DIY repair tips for a U1241 code may include checking and cleaning the diagnostic port, inspecting wiring for damage, and ensuring all connections are secure before seeking professional help.

8. Can a U1241 code be triggered by a loose gas cap in a Buick?

While a loose gas cap is more commonly associated with EVAP system codes, it is unlikely to directly trigger a U1241 code related to communication issues between the vehicle's systems.

9. Will resetting the U1241 code make it go away permanently in a Buick?

Resetting the code may temporarily clear the check engine light, but if the underlying issue causing the U1241 code is not addressed, the code is likely to reappear after driving the vehicle.

10. How long does it take to repair a U1241 code in a Buick?

The repair time for a U1241 code can vary depending on the cause of the issue and the availability of parts. It is recommended to consult with a professional mechanic for a more accurate time estimate.