U081E - Understanding Communication Error with Control Module (Common in 2016-2020 Ford Explorer)

Quick Answer

U081E means: DTC U081E signals a communication error between control modules.

Fix: Check and replace faulty components Cost: $150 - $400 Time: 90-180 minutes

Can I drive with U081E? Address this issue as soon as possible to avoid further complications.

Common Questions

What does U081E mean and how does it affect my car?

The U081E code signifies a communication error between your vehicle's control modules. This can lead to performance issues like erratic shifting, poor fuel economy, and dashboard malfunctions. Addressing this promptly is crucial to maintain your vehicle's reliability.

What are the most common causes of U081E and how much does it cost to fix?

Common causes include damaged wiring (50% likelihood), software issues, and low battery voltage. Repair costs can range from $150 for wiring repairs to $1200 for control module replacement, depending on the severity of the issue.

Can I drive my car with U081E or should I stop immediately?

It's not advisable to drive your car with this code, as it can lead to unpredictable behavior like transmission problems and reduced performance. If you notice symptoms, it's better to have your vehicle checked as soon as possible.

How can I diagnose U081E myself using GeekOBD APP?

With the GeekOBD APP, you can scan for DTCs, view freeze frame data, and monitor sensor outputs. Start by checking for the U081E code and any additional codes to get a full picture of the issue.

What vehicles are most commonly affected by U081E?

This code is often found in models like the 2016-2020 Ford Explorer and F-150, where advanced electronic systems are prevalent. It's wise to stay updated on any recalls or technical service bulletins related to these vehicles.

How can I prevent U081E from happening again?

Regular maintenance is key. Ensure your battery is in good condition, inspect wiring during service checks, and consider software updates from your dealership to keep your control modules functioning properly.

What is U081E?

The U081E diagnostic trouble code (DTC) indicates a communication error between the vehicle's control modules. In simpler terms, this means that one or more of the control units (like the engine control unit, transmission control unit, or body control module) are unable to properly communicate with each other. This can lead to various performance issues, as the vehicle relies on these modules for smooth operation and coordination of its systems. For instance, if the engine control module cannot receive signals from the transmission control module, it may affect gear shifting, fuel management, and overall engine performance. Real-world implications can include decreased fuel efficiency, erratic handling, or even failure to start in some instances. If you're experiencing this code, it's important to address it promptly, as ignoring it could lead to more significant problems down the road. This code is frequently found in popular models like the Ford Explorer and F-150, typically produced between 2016 and 2020, where advanced electronic systems are heavily utilized. Ignoring this code may not only compromise your vehicle's performance but also lead to increased repair costs in the future.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U081E is present:

  • Check engine light stays on constantly, indicating a communication fault that might affect vehicle performance.
  • Unresponsive dashboard indicators, which may result in inaccurate readings of speed, fuel level, or engine temperature.
  • Engine performance issues such as hesitation during acceleration, which can be frustrating and potentially dangerous.
  • Transmission shifting delays or erratic behavior, leading to a rough driving experience.
  • Decreased fuel economy, potentially showing a drop of 10-15% due to inefficient communication between modules.

Possible Causes

Most common causes of U081E (ordered by frequency):

  1. The most common cause of U081E is damaged wiring or connectors, accounting for about 50% of cases. This often occurs due to wear and tear or accidental damage.
  2. A second potential cause is software issues within the control modules, which may require an update or reprogramming to resolve.
  3. Another cause could be low battery voltage, which can disrupt communication; regular battery maintenance can help prevent this.
  4. Less commonly, a faulty control module itself may lead to this code, necessitating replacement or repair.
  5. Rarely, environmental factors like water intrusion into the wiring harness can cause communication failures, requiring careful inspection.

U081E Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repairing damaged wiring or connectors that affect communication between control modules.

  • Total: $150 - $400
  • Success rate: 85%
Control Module Reprogramming

Updating or reprogramming control modules to resolve software issues.

  • Total: $100 - $250
  • Success rate: 70%
Control Module Replacement

Replacing a faulty control module that is causing the communication error.

  • Total: $500 - $1200
  • Success rate: 90%
Money-Saving Tips for U081E
  • 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 U081E Diagnosis Process

Follow these systematic steps to accurately diagnose U081E. 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).

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: 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).

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: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, ensuring they're functioning correctly (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, ensuring they're functioning correctly (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: System function test - Verify proper operation after repairs and clear codes, ensuring the issue is resolved (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes, ensuring the issue is resolved (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: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for reoccurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for reoccurrence of the code (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: Repair Case Study: 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 45,000 miles

Problem: Customer reported check engine light and erratic transmission behavior.

Diagnosis: Performed a scan with GeekOBD APP and found U081E along with a couple of other codes. Visual inspection showed corrosion on wiring connectors.

Solution: Repaired the damaged wiring and connectors, cleared codes, and verified proper operation.

Cost: $300 (including parts and labor)

Result: Vehicle operated normally post-repair with no reoccurring codes.

Case Study 2: Repair Case Study: 2019 Ford F-150

Vehicle: 2019 Ford F-150, 30,000 miles

Problem: Customer experienced poor fuel economy and dashboard warning lights.

Diagnosis: Diagnostic scan revealed U081E. Further testing indicated a need for a software update.

Solution: Reprogrammed the control module and performed a system function test.

Cost: $200 (for software update)

Result: Fuel economy improved and warning lights cleared.

Diagnose U081E

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: U081E
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes