Quick Answer
U027E means: U027E indicates a loss of communication with the Electric Power Steering module.
Can I drive with U027E? Immediate action is recommended to avoid steering failure.
Common Questions
What does U027E mean and how does it affect my car?
The U027E code indicates a communication breakdown between your vehicle's Electric Power Steering module and the main computer system. This can significantly affect steering, making it feel heavy or unresponsive, and could pose a safety risk if not addressed. If you encounter this code, it's crucial to get your vehicle checked to prevent further issues.
What are the most common causes of U027E and how much does it cost to fix?
Common causes of U027E include damaged wiring, a failed EPS module, or poor electrical connections. Repair costs can vary widely; for wiring repairs, expect $100-$300, while EPS module replacement can range from $400 to $800.
Can I drive my car with U027E or should I stop immediately?
Driving with a U027E code can be dangerous. If your steering feels heavy or unresponsive, it’s best to stop driving and seek immediate repairs to avoid a potential steering failure.
How can I diagnose U027E myself using GeekOBD APP?
Using the GeekOBD APP, you can perform a full OBD2 scan to check for the U027E code, review freeze frame data for context, and monitor live data to pinpoint issues with the EPS module and wiring.
What vehicles are most commonly affected by U027E?
U027E is frequently reported in vehicles like the 2015-2019 Ford F-150, 2016-2018 Chevrolet Silverado, and 2017-2019 GMC Sierra. Owners of these models should be aware and check for recalls or technical service bulletins related to steering issues.
How can I prevent U027E from happening again?
Regular maintenance of your vehicle's electrical system is key to preventing U027E. This includes checking wiring for wear, ensuring connectors are secure, and monitoring battery health to maintain proper voltage levels.
What is U027E?
The diagnostic trouble code (DTC) U027E indicates a communication link error between the Electric Power Steering (EPS) module and the vehicle's onboard computer system. This code typically arises when the EPS module is unable to send or receive data effectively, leading to potential steering issues. When this error occurs, drivers may notice problems with steering assist, which can feel heavy or unresponsive. In more severe cases, the steering might lock up, posing a significant safety risk. The code can be triggered by various factors, including damaged wiring, failed modules, or even issues within the vehicle's electrical system. For car owners, this means that if you see the U027E code, it's essential to address it promptly to avoid further complications. Vehicles equipped with EPS systems rely heavily on electronic signals to function correctly, and disruptions in this communication can lead to erratic steering behavior, impacting both drivability and safety. Addressing the U027E code quickly can help maintain your vehicle's performance and ensure your safety on the road.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U027E is present:
- The check engine light may illuminate on the dashboard, indicating a fault in the steering system.
- Drivers may experience heavy steering or a lack of power assist, making it difficult to maneuver the vehicle.
- Unusual noises, such as grinding or whining, may occur while turning the steering wheel, signaling potential issues with the EPS.
- Intermittent steering response where the steering feels normal at times but heavy or unresponsive at others.
- In extreme cases, the steering wheel may lock up, preventing any movement of the vehicle.
Possible Causes
Most common causes of U027E (ordered by frequency):
- The most common cause of U027E is damaged or corroded wiring in the EPS system, with a likelihood of about 40%. This can disrupt communication between the EPS module and the vehicle's computer.
- Another prevalent issue is a failed EPS module itself, which can occur due to manufacturing defects or wear, accounting for roughly 30% of cases.
- Poor electrical connections, such as loose or oxidized connectors, can also lead to communication errors, with about 20% of instances attributed to this cause.
- A less common but serious cause includes issues with the vehicle's battery or alternator, affecting the power supply to the EPS module.
- Rarely, software glitches in the vehicle's ECM or EPS module can trigger the U027E code, although this is less frequent.
U027E Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repair or replacement of damaged wiring or connectors in the EPS system.
- Total: $100 - $300
- Success rate: 85%
EPS Module Replacement
Replacement of a failed Electric Power Steering module.
- Total: $400 - $800
- Success rate: 90%
Money-Saving Tips for U027E
- 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 U027E Diagnosis Process
Follow these systematic steps to accurately diagnose U027E. 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, focusing on the EPS module and wiring (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the EPS module and wiring (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes to reset the system (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes to reset the system (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor performance (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor performance (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: EPS Module Replacement for 2016 Ford F-150
Vehicle: 2016 Ford F-150, 45,000 miles
Problem: Customer reported heavy steering and a check engine light.
Diagnosis: After scanning with GeekOBD APP, U027E was confirmed. Visual inspection revealed damaged wiring.
Solution: Replaced the damaged wiring and the EPS module.
Cost: $700 (including parts and labor)
Result: Post-repair, the steering functioned normally, and the check engine light was cleared.
Case Study 2: Wiring Repair for 2018 Chevrolet Silverado
Vehicle: 2018 Chevrolet Silverado, 30,000 miles
Problem: Customer experienced intermittent steering assist failure.
Diagnosis: Scan revealed U027E; further inspection showed corrosion at a connector.
Solution: Repaired the wiring and cleaned the connectors.
Cost: $250 (parts and labor)
Result: Steering assist was restored, and no further issues were reported.