AutoCodes – Dodge – U121E Dodge

U121E Dodge Code - Lost Communication With Steering Wheel Cruise Control Switch

Quick Answer

The Steering Column Control Module (SCCM) is located near the top of the Steering Column underneath the Steering Wheel. Common causes include Faulty Steering Wheel Cruise Control Switch, Steering Wheel Cruise Control Switch harness is open or shorted, Steering Wheel Cruise Control Switch 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: U121E Dodge indicates Lost Communication With Steering Wheel Cruise Control Switch.
Common causes: Common causes include Faulty Steering Wheel Cruise Control Switch, Steering Wheel Cruise Control Switch harness is open or shorted, Steering Wheel Cruise Control Switch 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.

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Code Popularity 1,838

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U121E Dodge Description

The Steering Column Control Module (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. LIN Bus messages received by the LIN/CAN C Gateway are broadcast over the CAN C Bus to the appropriate modules.
The Right Steering Wheel Switch (Speed Control Switch) communicates with the Steering Column Control Module (SCCM) through a dedicated LIN Bus. When the SCCM receives a LIN Bus message from the Right Steering Wheel Switch, the SCCM will send a message over the CAN C Bus to the appropriate modules.
The Diagnostic Trouble Code (DTC) sets if the Steering Column Control Module (SCCM) does not detect any communication with the Right Steering Wheel Switch (Speed Control) for greater than five seconds.

OBDII Code U121E Dodge - Lost Communication With Steering Wheel Cruise Control Switch - AutoCodes.com — U121E Dodge Code - Lost Communication With Steering Wheel Cruise Control Switch

What does this mean?

What are the Possible Causes of the DTC U121E Dodge?

Faulty Steering Wheel Cruise Control Switch
Steering Wheel Cruise Control Switch harness is open or shorted
Steering Wheel Cruise Control Switch circuit poor electrical connection
Faulty Steering Column Control Module (SCCM)

How to Fix the DTC U121E Dodge?

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 U121E Dodge 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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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 U121E Dodge Code

1. What are the common symptoms of OBDII code U121E in a Dodge indicating lost communication with the steering wheel cruise control switch?

- The common symptoms include the cruise control system not working, the cruise control light on the dashboard illuminating, and potential issues with the steering wheel controls.

2. What are the possible causes of OBDII code U121E in a Dodge related to the lost communication with the steering wheel cruise control switch?

- The possible causes may include a faulty cruise control switch, damaged wiring or connectors in the steering column, a defective clock spring, or issues with the body control module.

3. How can I diagnose the OBDII code U121E in a Dodge related to the steering wheel cruise control switch communication issue?

- Diagnosing this code typically involves scanning the vehicle for other related codes, checking the wiring and connections around the steering wheel, testing the cruise control switch functionality, and inspecting the clock spring for any damage.

4. Is it safe to drive my Dodge with the OBDII code U121E indicating lost communication with the steering wheel cruise control switch?

- It is generally safe to drive the vehicle with this code, as it primarily affects the cruise control system and does not pose an immediate safety risk. However, it is recommended to address the issue promptly to avoid potential inconvenience.

5. Can I repair the OBDII code U121E in my Dodge related to the steering wheel cruise control switch communication issue myself?

- Depending on your automotive knowledge and skills, you may be able to repair this issue yourself by replacing the faulty cruise control switch, repairing damaged wiring, or addressing other potential causes. However, professional assistance may be necessary for more complex repairs.

6. What are some tips for repairing the OBDII code U121E in a Dodge associated with lost communication with the steering wheel cruise control switch?

- Some repair tips include conducting a thorough inspection of the cruise control components, testing the switch for functionality, ensuring proper wiring connections, and checking for any related issues in the steering column.

7. Will resetting the OBDII code U121E in my Dodge solve the communication problem with the steering wheel cruise control switch?

- Resetting the code may temporarily clear the warning light, but it will not address the underlying communication issue with the cruise control switch. It is important to diagnose and repair the root cause of the problem for a lasting solution.

8. How much does it typically cost to repair the OBDII code U121E in a Dodge due to lost communication with the steering wheel cruise control switch?

- The cost of repairing this code can vary depending on the specific cause of the issue, the parts needed for replacement, and whether you choose to do the repair yourself or seek professional help. It is advisable to obtain quotes from mechanics for an accurate estimate.

9. Are there any recalls or technical service bulletins related to the OBDII code U121E in Dodge vehicles for the steering wheel cruise control switch communication problem?

- It is recommended to check with a Dodge dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code. Manufacturers may provide solutions or guidance for addressing known issues.

10. How can I prevent the OBDII code U121E from recurring in my Dodge after repairing the communication problem with the steering wheel cruise control switch?

- To prevent the code from recurring, ensure that all repairs are performed accurately, use high-quality replacement parts, regularly maintain the cruise control system, and address any related issues promptly to maintain proper communication with the steering wheel controls.