U1205 Steering Column Module Communication Loss
The U1205 code indicates a communication failure on the Controller Area Network (CAN) or the SCP (J1850) bus, specific to certain manufacturers. The main control module (such as the PCM or BCM) receives invalid or missing data from the Steering Column Control Module (SCCM/SCM). This means the steering column module is not transmitting the expected information over the data bus. Loss of this communication can affect systems integrated into the steering column, such as cruise control, audio controls, or switch illumination.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or failed Steering Column Control Module (SCCM)
- Open or short circuit in the SCP (J1850) bus wiring
- Corroded, bent, or poorly connected pins in the steering column harness connectors
- Blown or open fuse powering the steering column module
- Internal failure in the main control module (PCM/BCM) that monitors the network
- Resistance issues or electromagnetic interference on the communication line
3. Symptoms You Will Notice
- Cruise control inoperative
- Steering wheel audio or other controls not working
- Warning lights on the dashboard (e.g., check engine or communication error)
- Intermittent or no illumination of steering column switches
4. Step-by-Step Diagnosis
Scan for all stored codes and freeze frame data to confirm U1205 and related codes.
Inspect the steering column module fuse and replace if blown.
Visually check the wiring and connectors at the steering column for damage, corrosion, or loose pins.
Test communication on the SCP bus using a multimeter or oscilloscope to check for shorts, opens, or signal issues.
If wiring is intact, attempt to communicate with the SCCM via a scan tool; if no response, suspect a faulty module.
Check for technical service bulletins (TSBs) related to U1205 for the specific vehicle make and model.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive short distances, but you may lose features like cruise control or steering wheel controls. Have it diagnosed soon to prevent potential communication issues affecting other systems.
How much does it cost to fix?▼
The repair cost typically ranges from $100 to $600, depending on the cause. A simple fuse or wiring repair may be under $150, while replacing the steering column module can cost $300–$600 including labor.