Quick Answer
U0745 means: U0745 indicates a communication error in the electric power steering system, affecting vehicle steering assist.
Can I drive with U0745? Immediate attention is recommended to avoid safety issues and further damage.
Common Questions
What does U0745 mean and how does it affect my car?
U0745 indicates a communication breakdown between your vehicle's power steering control module and the engine control module. This can lead to a heavier steering feel or complete loss of power steering, especially when turning or parking, making your vehicle tougher to handle. Addressing this code quickly is crucial for safe driving.
What are the most common causes of U0745 and how much does it cost to fix?
The primary causes of U0745 include a faulty power steering control module, damaged wiring, and issues with the steering angle sensor. Repair costs typically range from $150 for wiring repairs to over $800 for module replacements, depending on the specific problem.
Can I drive my car with U0745 or should I stop immediately?
While you may be able to drive your car with the U0745 code, it's not advisable due to safety concerns. The loss of power steering assist can make steering difficult, especially in tight spaces. It's best to have the issue diagnosed and repaired as soon as possible.
How can I diagnose U0745 myself using GeekOBD APP?
Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the U0745 code along with other codes. Check the freeze frame data to see the vehicle's status at the time the code was triggered. Look for any abnormal readings indicating wiring issues or module failures.
What vehicles are most commonly affected by U0745?
The U0745 code is frequently reported in various models, particularly 2011-2018 Ford Fusions and 2013-2017 Honda Civics. It's essential to check for recalls or technical service bulletins (TSBs) associated with these vehicles, as they may have known issues related to the power steering system.
How can I prevent U0745 from happening again?
To prevent U0745 from recurring, ensure regular maintenance of your vehicle's electrical system, including checks on wiring and connections. Keeping your vehicle clean and free of debris can also help prevent corrosion of electrical components, potentially extending their lifespan.
What is U0745?
The U0745 diagnostic trouble code (DTC) indicates a communication error between the power steering control module and the vehicle's onboard diagnostics system. This code is commonly found in several Ford and Honda models, particularly those equipped with electric power steering systems. When the U0745 code appears, it suggests that the power steering control module is unable to communicate correctly with the engine control module (ECM) or other critical components. This failure can stem from poor wiring connections, faulty modules, or issues in the steering system itself. Owners may notice that their power steering feels heavier than usual or may even lose assist altogether, making the vehicle more challenging to maneuver, especially at low speeds. Ignoring this code can lead to severe driving difficulties and potential safety hazards, as the power steering assists in steering control. Additionally, if the issue is not addressed promptly, it may lead to further damage or complications, requiring costlier repairs down the line. Therefore, understanding the implications of the U0745 code is crucial for maintaining your vehicle's performance and safety.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0745 is present:
- The check engine light illuminates on your dashboard, indicating a potential issue with your vehicle's systems.
- Steering becomes noticeably heavier, especially during low-speed maneuvers, leading to difficulty in turning.
- You may experience intermittent loss of power steering assist, making the vehicle harder to control, particularly when parking or making tight turns.
- Strange noises may occur when turning the steering wheel, such as whining or grinding sounds, indicating potential mechanical failure.
- In some cases, the vehicle may exhibit warning messages on the dashboard related to power steering failure.
Possible Causes
Most common causes of U0745 (ordered by frequency):
- The most common cause of the U0745 code is a faulty power steering control module, which can occur in about 40% of cases. This module is responsible for regulating the electric power steering system's functions and may fail due to internal issues.
- Another prevalent cause is damaged wiring or poor connections between the power steering control module and the ECM. This is often seen in older vehicles or those exposed to harsh conditions, accounting for roughly 30% of U0745 occurrences.
- A third cause can be the failure of the steering angle sensor, which communicates the wheel position to the power steering control module. Regular inspections can prevent this issue by ensuring the sensor is functioning correctly.
- Less commonly, a software glitch in the vehicle's onboard computer can trigger the U0745 code, particularly in newer models that rely heavily on electronic systems. This can often be resolved with a software update.
- A rare but serious cause includes a complete failure of the electric power steering system, which might necessitate a full replacement of the steering assembly.
U0745 Repair Costs
Cost Breakdown by Repair Type
Power Steering Control Module Replacement
Replacing the faulty power steering control module can resolve the U0745 issue and restore proper communication.
- Total: $500 - $800
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connections between the control module and ECM can solve communication issues.
- Total: $150 - $300
- Success rate: 80%
Steering Angle Sensor Replacement
If the steering angle sensor is faulty, replacing it can restore proper system operation.
- Total: $200 - $400
- Success rate: 75%
Money-Saving Tips for U0745
- 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 U0745 Diagnosis Process
Follow these systematic steps to accurately diagnose U0745. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, especially wiring and connectors (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, especially wiring and connectors (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure all systems are functioning correctly (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure all systems are functioning correctly (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: Power Steering Control Module Replacement on 2015 Ford Fusion
Vehicle: 2015 Ford Fusion, Mileage: 85,000
Problem: Customer reported difficulty steering and a persistent check engine light.
Diagnosis: After scanning with GeekOBD APP, U0745 was confirmed. A visual inspection revealed a faulty power steering control module.
Solution: Replaced the power steering control module and cleared the DTCs.
Cost: $750 (including parts and labor)
Result: Steering returned to normal, and the check engine light remained off after the repair.
Case Study 2: Wiring Repair on 2013 Honda Civic
Vehicle: 2013 Honda Civic, Mileage: 60,000
Problem: Customer complained of heavy steering and intermittent power steering assist.
Diagnosis: The diagnostic check revealed U0745. Inspection showed damaged wiring leading to the power steering control module.
Solution: Repaired the damaged wiring and reconnected the harness.
Cost: $200 (including parts and labor)
Result: The power steering assist was restored, and the issue did not reoccur.