U1201 – OBD-II DTC

OBD-II DTC U1201 – SCP (J1850) Invalid or Missing Data for Seat Motion / Control

DTC U1201 meaning

DTC U1201 refers to a communication issue within the vehicle’s network, specifically related to the Seat Motion/Control system. This code indicates that the data being transmitted over the SCP (Single Wire CAN Protocol) using the J1850 standard is either invalid or missing. The seat control module is unable to receive or send the necessary data, which can affect the functionality of the seat adjustments.

DTC U1201 symptoms

Common symptoms associated with DTC U1201 may include:

• Inability to adjust the seat position electronically.
• Seat memory functions not working.
• Warning lights illuminated on the dashboard.
• Other electronic components in the vehicle may also exhibit issues due to communication failure.

DTC U1201 causes

Several factors can lead to the occurrence of DTC U1201, including:

• Faulty seat control module.
• Wiring issues, such as damaged or corroded connectors.
• Faulty communication lines within the vehicle’s network.
• Software glitches or programming errors in the control module.
• Issues with other modules that communicate with the seat control module.

DTC U1201 seriousness

The seriousness of DTC U1201 can vary. While it may not pose an immediate safety risk, it can lead to discomfort due to the inability to adjust the seat properly. Additionally, if left unaddressed, it may indicate broader communication issues within the vehicle’s electronic systems, potentially leading to more significant problems.

How to diagnose DTC U1201

To diagnose DTC U1201, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the U1201 code.
2. Check for any additional DTCs that may provide more context.
3. Inspect the wiring and connectors related to the seat control module for damage or corrosion.
4. Test the seat control module for proper operation using a multimeter.
5. Verify the communication lines for continuity and proper voltage levels.
6. Check for software updates or reprogramming needs for the control module.

How to fix DTC U1201 step-by-step instructions

To fix DTC U1201, follow these steps:

1. Inspect and repair any damaged wiring or connectors related to the seat control module.
2. Replace the seat control module if it is found to be faulty.
3. Ensure all related modules are functioning correctly and communicating properly.
4. Update or reprogram the seat control module if necessary.
5. Clear the DTC using an OBD-II scanner and test the system to ensure the issue is resolved.

How to erase DTC U1201

To erase DTC U1201, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the diagnostic menu and locate the option to clear or erase DTCs.
3. Select the option to erase the DTCs and confirm the action.
4. Disconnect the scanner and start the vehicle to check if the code reappears.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.