Quick Answer
U0246 means: U0246 indicates a communication error with the Steering Angle Sensor.
Can I drive with U0246? Immediate attention is recommended to ensure vehicle safety and functionality.
Common Questions
What does U0246 mean and how does it affect my car?
U0246 indicates that the communication between your vehicle's Steering Angle Sensor and the Engine Control Module has failed. This can lead to issues with vehicle handling and safety features like traction control. If left unaddressed, it can impair your vehicle's performance and safety.
What are the most common causes of U0246 and how much does it cost to fix?
The most common causes include a faulty Steering Angle Sensor, wiring issues, and connector problems. Repair costs can range from $100 for wiring repairs to $400 for a complete sensor replacement, depending on the specific issue and labor involved.
Can I drive my car with U0246 or should I stop immediately?
While it's possible to drive with U0246, it's not advisable due to potential safety risks. Erratic steering and compromised stability control can lead to hazardous driving conditions, especially in inclement weather.
How can I diagnose U0246 myself using GeekOBD APP?
Using the GeekOBD APP, you can conduct an OBD2 scan to retrieve diagnostic codes and freeze frame data, which provides context for the U0246 code. Look for any related codes or data that could indicate wiring issues or sensor faults.
What vehicles are most commonly affected by U0246?
U0246 is commonly seen in vehicles like the 2016 Ford F-150, 2018 Chevrolet Silverado, and various models from Honda and Toyota. Check for any recalls or Technical Service Bulletins (TSBs) related to steering systems in your specific vehicle.
How can I prevent U0246 from happening again?
Regular maintenance, including checking and securing wiring and connections, can help prevent U0246. Additionally, monitor for any dashboard warning lights and resolve them promptly to avoid further issues.
What is U0246?
The diagnostic trouble code (DTC) U0246 refers to a communication error between the vehicle's control modules, specifically indicating a problem with the Steering Angle Sensor (SAS). When this code appears, it means that the Engine Control Module (ECM) has lost communication with the SAS module, which is crucial for functions such as stability control, traction control, and adaptive cruise control. This can lead to several issues, including compromised vehicle handling and safety systems. Symptoms may include warning lights on the dashboard, such as the 'Check Engine' or 'Stability Control' indicator. In vehicles like the 2016 Ford F-150 or the 2018 Chevrolet Silverado, experiencing U0246 can lead to erratic steering behavior or difficulty in controlling the vehicle under certain conditions. As a car owner, it’s essential to address this issue promptly, as ignoring it can lead to further complications or even hazardous driving situations. Moreover, this code may also surface if there are wiring issues, connector problems, or failures within the sensor itself. Diagnosing and fixing U0246 usually involves checking for wiring integrity, ensuring connectors are secure, and testing the SAS for functionality. Addressing these issues early can save you time and money down the road.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0246 is present:
- The 'Check Engine' light or stability control warning light illuminates on the dashboard, indicating a potential issue with the steering system.
- You may experience erratic steering or difficulty maintaining control, especially during sharp turns or adverse weather conditions.
- Drivers may notice that the vehicle's traction control or stability control systems are not functioning as expected, leading to decreased safety.
- In some cases, the vehicle may enter a limp mode, limiting speed and power to protect the engine and transmission.
- Fuel economy may decrease due to the vehicle's inability to properly manage stability and traction control systems.
Possible Causes
Most common causes of U0246 (ordered by frequency):
- The most common cause is a faulty Steering Angle Sensor, which is responsible for relaying critical information to the vehicle's control modules. This occurs in about 60% of U0246 cases.
- Wiring issues, such as frayed wires or poor connections, can disrupt communication between the SAS and ECM, accounting for around 25% of the occurrences.
- Connector problems, including corrosion or loose connections, can prevent proper electrical signals from passing through, making up about 10% of cases.
- Less common but serious causes include failures within the vehicle's ECM or related control modules, which may require professional diagnosis and repair.
- A rare cause could be software glitches in the vehicle’s onboard computer systems, which may necessitate a software update or reset.
U0246 Repair Costs
Cost Breakdown by Repair Type
Steering Angle Sensor Replacement
Replacing the faulty steering angle sensor to restore proper communication.
- Total: $150 - $400
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring and connectors to ensure proper communication.
- Total: $100 - $250
- Success rate: 85%
ECM Reprogramming
Updating or reprogramming the ECM if software issues are detected.
- Total: $100 - $200
- Success rate: 75%
Money-Saving Tips for U0246
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional U0246 Diagnosis Process
Follow these systematic steps to accurately diagnose U0246. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection to check for signs of damaged wiring, loose connections, or corrosion, which should take about 5-10 minutes
Step 1: Conduct an initial visual inspection to check for signs of damaged wiring, loose connections, or corrosion, which should take about 5-10 minutes.
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all stored codes and freeze frame data to gain context about the fault condition; this process should take around 10-15 minutes
Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all stored codes and freeze frame data to gain context about the fault condition; this process should take around 10-15 minutes.
Step 3: Step 3: Perform component testing on the Steering Angle Sensor using a multimeter or diagnostic tool to verify its functionality; expect this to take 20-30 minutes
Step 3: Perform component testing on the Steering Angle Sensor using a multimeter or diagnostic tool to verify its functionality; expect this to take 20-30 minutes.
Step 4: Step 4: After repairs, conduct a system function test to ensure proper operation of the SAS and clear any codes found in the system; this should take about 10-15 minutes
Step 4: After repairs, conduct a system function test to ensure proper operation of the SAS and clear any codes found in the system; this should take about 10-15 minutes.
Step 5: Step 5: Road test the vehicle under various conditions to confirm that the repair has resolved the issue and that the steering system operates normally; this final check will take approximately 15-20 minutes
Step 5: Road test the vehicle under various conditions to confirm that the repair has resolved the issue and that the steering system operates normally; this final check will take approximately 15-20 minutes.
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: Steering Angle Sensor Replacement in 2016 Ford F-150
Vehicle: 2016 Ford F-150, 45,000 miles
Problem: Customer reported 'Check Engine' light and erratic steering behavior.
Diagnosis: Initial scanning with GeekOBD APP revealed U0246. Visual inspection showed a damaged steering angle sensor.
Solution: Replaced the steering angle sensor and cleared the codes.
Cost: $350 (parts: $250, labor: $100)
Result: Customer reported normal steering operation and no warning lights after repair.
Case Study 2: Wiring Repair on 2018 Chevrolet Silverado
Vehicle: 2018 Chevrolet Silverado, 30,000 miles
Problem: Steering warning light illuminated, with difficulty in steering response.
Diagnosis: OBD2 scan confirmed U0246; further inspection revealed corroded wiring connections.
Solution: Repaired wiring and ensured all connections were secure.
Cost: $150 (parts: $50, labor: $100)
Result: Steering system functioned properly post-repair, and warning light was resolved.