[SOLVED] Fixing U121E: Steering Wheel Cruise Control Switch Communication Lost

If you’re experiencing an illuminated Engine Light or Service Engine Soon Warning Light, it could be due to the automobile fault code: u121e.

This code is typically caused by a faulty Steering Wheel Cruise Control Switch, an open or shorted harness, or a poor electrical connection in the Steering Wheel Cruise Control Switch circuit.

It could also be caused by a faulty Steering Column Control Module (SCCM).

The importance of repairing this issue lies in the fact that it could affect the functionality of your vehicle’s cruise control system.

The repair difficulty is moderate, with a repair time of 1.0.

To fix the issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON, it could be a sign of u121e fault code.

Here are some symptoms to look out for:

  • The U121E fault code in an automobile can cause several symptoms.
  • The most common symptom is the illumination of the engine light or service engine soon warning light.
  • Other symptoms include issues with the transmission, such as difficulty shifting gears or slipping gears.
  • The vehicle may also experience a loss of power or acceleration, and the speedometer may not function properly.
  • Additionally, the vehicle may experience stalling or hesitation during acceleration, and the fuel efficiency may decrease.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code u121e can be caused by a faulty cruise control switch, poor electrical connection, or a faulty control module.

  • The automobile fault code U121E can be caused by a faulty steering wheel cruise control switch.
  • It can also be caused by an open or shorted steering wheel cruise control switch harness.
  • Another possible cause is a poor electrical connection in the steering wheel cruise control switch circuit.
  • Lastly, a faulty steering column control module (SCCM) can also trigger this fault code.

Below are some possible fixes for the automobile fault code u121e, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code u121e, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U121E can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops. Therefore, the total cost of fixing the U121E fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The SCCM is located near the top of the Steering Column underneath the Steering Wheel.

The SCCM includes the Clockspring, the Multi-Function Switch and a Local Interconnect Network (LIN)Controller Area Network (CAN) C Gateway. The Right Steering Wheel Switch (Speed Control Switch) communicates with the SCCM through a dedicated LIN Bus. The DTC sets if the SCCM does not detect any communication with the Right Steering Wheel Switch (Speed Control) for greater than five seconds.

U121E Code – Lost Communication With Steering Wheel Cruise Control Switch.

What are the possible causes of the u121e automobile fault code?

If you’re experiencing the u121e fault code, your engine light may be on. This could be due to a faulty steering wheel cruise control switch, an open or shorted harness, a poor electrical connection in the steering wheel cruise control switch circuit, or a faulty steering column control module. To fix the issue, check the possible causes listed above and visually inspect the wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the related wiring harness and connectors to fix the u121e fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to the u121e fault code, there are a few possible causes to consider. One of them is a faulty Steering Wheel Cruise Control Switch or a related wiring issue. To fix this, you should visually inspect the wiring harness and connectors for any damage or poor electrical connections. Check for broken, bent, pushed out, or corroded connector pins. This will help you identify and resolve the issue.

Is it possible for a faulty Steering Column Control Module (SCCM) to cause the u121e fault code?

Yes, a faulty Steering Column Control Module (SCCM) can cause the u121e fault code. This can result in the engine light turning on or the service engine soon warning light. Other possible causes include a faulty steering wheel cruise control switch, an open or shorted harness, or poor electrical connection in the steering wheel cruise control switch circuit. To fix the issue, it is recommended to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

u121e error fault code explained

If your engine light is on and you have a u121e fault code, it may be due to a faulty steering wheel cruise control switch, an open or shorted harness, poor electrical connection, or a faulty steering column control module.

To fix it, visually inspect the wiring harness and connectors for damage and check for broken, bent, pushed out, or corroded connector pins.

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