U0A46 - Understanding the U0A46 Code on 2016-2020 Ford Explorer and Other Models

Quick Answer

U0A46 means: U0A46 indicates a communication error between the power steering control module and other vehicle systems.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with U0A46? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does U0A46 mean and how does it affect my car?

The U0A46 code indicates a communication issue between the steering control module and other modules in your vehicle. This can lead to difficulties in steering, especially at low speeds, and may trigger warning lights. If not addressed, it can affect vehicle handling and safety.

What are the most common causes of U0A46 and how much does it cost to fix?

The most common causes of U0A46 include a faulty power steering control module, damaged wiring, or software issues. Repair costs can range from $100 for wiring repairs to $800 for a module replacement.

Can I drive my car with U0A46 or should I stop immediately?

It's advisable to stop driving your vehicle if you see the U0A46 code. Loss of power steering can make handling difficult, especially in tight spaces, posing a safety risk.

How can I diagnose U0A46 myself using GeekOBD APP?

You can use the GeekOBD APP to scan for trouble codes. Once you retrieve the U0A46 code, check the freeze frame data for vehicle speed and engine load at the time of the error to help pinpoint the issue.

What vehicles are most commonly affected by U0A46?

The U0A46 code is commonly found in the 2016-2020 Ford Explorer, Ford F-150, and various models from the Ford lineup that feature electronic power steering.

How can I prevent U0A46 from happening again?

To prevent U0A46, regularly inspect the wiring and connectors in your vehicle's steering system, keep software updated, and address any issues promptly to avoid further damage.

What is U0A46?

The diagnostic trouble code (DTC) U0A46 indicates a communication error between modules in your vehicle's network, specifically related to the power steering control module. This code is commonly found in vehicles like the 2016-2020 Ford Explorer and other models equipped with advanced driver assistance systems (ADAS). A U0A46 code usually signifies that the steering control module is unable to communicate with other control modules, which could lead to various issues, including loss of power steering assistance, erratic steering response, or warning lights on the dashboard. In practical terms, this means that if your vehicle is showing this code, you might experience difficulty in steering, particularly at low speeds or during parking maneuvers. Ignoring this code can lead to worsening steering performance and could potentially create unsafe driving conditions. Therefore, it’s crucial to diagnose and address the underlying issues as soon as possible to ensure your vehicle’s steering system functions properly.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0A46 is present:

  • The check engine light or power steering warning light may illuminate on the dashboard, indicating potential issues with the steering system.
  • Drivers may notice difficulty steering, especially at low speeds, which can lead to unsafe handling in tight spaces or during parking.
  • There may be an intermittent loss of power steering assistance, making it harder to maneuver the vehicle.
  • In some cases, the vehicle may exhibit unusual noises from the steering column, such as grinding or whining, which could indicate a failing module.
  • You might experience erratic steering response, where the vehicle feels loose or overly sensitive to driver inputs.

Possible Causes

Most common causes of U0A46 (ordered by frequency):

  1. The most common cause of U0A46 is a faulty power steering control module, which accounts for approximately 60% of cases. This can happen due to internal component failure or water damage.
  2. Another common cause is damaged wiring or poor connections within the steering system, which can lead to communication failures. Regular inspections of wiring harnesses can help prevent this.
  3. Software glitches or outdated firmware in the vehicle's control modules can also trigger this code, which may require a software update at the dealership.
  4. Less commonly, a failing battery or alternator may cause voltage issues that affect module communication, so checking the vehicle's electrical system is vital.
  5. In rare cases, a complete failure of the vehicle's CAN bus system can lead to multiple communication errors, which may require extensive diagnostic work.

U0A46 Repair Costs

Cost Breakdown by Repair Type

Power Steering Control Module Replacement

Replacing a faulty power steering control module, which is often the primary cause of the U0A46 code.

  • Total: $300 - $800
  • Success rate: 85%
Wiring Repair and Connector Replacement

Repairing or replacing damaged wiring and connectors associated with the power steering system.

  • Total: $100 - $300
  • Success rate: 75%
Software Update

Updating the vehicle's software to fix potential communication issues.

  • Total: $50 - $150
  • Success rate: 70%
Money-Saving Tips for U0A46
  • 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 U0A46 Diagnosis Process

Follow these systematic steps to accurately diagnose U0A46. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Begin with an initial visual inspection to check for any obvious signs of damage, such as frayed wiring or loose connectors around the steering control module

Step 1: Begin with an initial visual inspection to check for any obvious signs of damage, such as frayed wiring or loose connectors around the steering control module. (5-10 minutes)

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use a diagnostic tool, such as the GeekOBD APP, to scan the vehicle's OBD2 system

Step 2: Use a diagnostic tool, such as the GeekOBD APP, to scan the vehicle's OBD2 system. Record all trouble codes and freeze frame data to analyze the context of the fault. (10-15 minutes)

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Conduct component testing with a multimeter to check for proper voltage and ground at the power steering control module and related components

Step 3: Conduct component testing with a multimeter to check for proper voltage and ground at the power steering control module and related components. (20-30 minutes)

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: After any repairs, perform a system function test to verify that the steering assist operates correctly and clear the codes to reset the system

Step 4: After any repairs, perform a system function test to verify that the steering assist operates correctly and clear the codes to reset the system. (10-15 minutes)

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Finally, take the vehicle for a road test under various driving conditions to ensure that the steering system functions properly and no codes reappear

Step 5: Finally, take the vehicle for a road test under various driving conditions to ensure that the steering system functions properly and no codes reappear. (15-20 minutes)

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

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: Power Steering Module Replacement on a 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 50,000 miles

Problem: Customer reported intermittent loss of power steering and warning lights.

Diagnosis: After scanning with the GeekOBD APP, the U0A46 code was confirmed, and visual inspection revealed water damage to the control module.

Solution: Replaced the power steering control module and sealed potential leaks. Updated the software.

Cost: $750 (Module: $600, Labor: $150)

Result: The vehicle's steering returned to normal operation, and no codes reappeared after road testing.

Case Study 2: Wiring Repair on a 2017 Ford F-150

Vehicle: 2017 Ford F-150, 40,000 miles

Problem: Driver experienced steering difficulties and dashboard warning lights.

Diagnosis: Diagnostic scan revealed U0A46; inspection showed a frayed wire in the steering harness.

Solution: Repaired the damaged wiring and ensured all connections were secure.

Cost: $200 (Labor: $100, Wiring: $100)

Result: Restored full steering function, and subsequent tests showed no reoccurring issues.

Diagnose U0A46

Use GeekOBD APP for professional diagnosis!

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Code Information

Code: U0A46
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes