U0175 - Understanding DTC U0175: Communication Error with the Fuel Level Sensor - Common in 2016-2020 Ford Vehicles

Quick Answer

U0175 means: DTC U0175 indicates a communication error between the Engine Control Module and the fuel level sensor.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with U0175? It is recommended to diagnose and repair this issue promptly to avoid running out of fuel unexpectedly.

Common Questions

What does U0175 mean and how does it affect my car?

The U0175 code indicates a communication error between your vehicle's Engine Control Module and the fuel level sensor. This affects your car's ability to accurately gauge fuel levels, which can lead to running out of fuel unexpectedly. It's essential to address this issue to ensure your vehicle operates safely and efficiently.

What are the most common causes of U0175 and how much does it cost to fix?

Common causes of U0175 include a faulty fuel level sensor (60% likelihood), wiring issues (20%), and, in rare cases, ECM malfunctions (10%). Repair costs typically range from $150 to $1,000 depending on the issue, with sensor replacement being the most common and cost-effective solution.

Can I drive my car with U0175 or should I stop immediately?

While you can drive with the U0175 code, it is not advisable as it may lead to unexpected fuel depletion. If you notice erratic fuel gauge readings, it's best to have the issue diagnosed and repaired promptly to avoid running out of fuel on the road.

How can I diagnose U0175 myself using GeekOBD APP?

To diagnose U0175 using the GeekOBD APP, first connect the app to your vehicle's OBD2 port. Use the app to read the codes and view freeze frame data. Check for any additional codes that may provide context to the U0175 error. You can also monitor live data to check fuel level readings and sensor performance.

What vehicles are most commonly affected by U0175?

DTC U0175 is frequently reported in 2016-2020 Ford vehicles, including the Ford F-150 and Ford Explorer. These models may experience issues due to sensor design and wiring layouts. Always check for any recalls or technical service bulletins related to the fuel level sensor for your specific make and model.

How can I prevent U0175 from happening again?

To prevent the U0175 code from recurring, regularly inspect and maintain your vehicle's fuel system. Ensure that wiring is intact and free from corrosion, and consider having your fuel sensor checked during routine maintenance. Keeping your vehicle's software updated can also help prevent glitches that may affect communication.

What is U0175?

DTC (Diagnostic Trouble Code) U0175 indicates a communication error with the fuel level sensor. This code typically arises in vehicles equipped with advanced onboard diagnostic systems, including many Ford models manufactured between 2016 and 2020. The fuel level sensor is responsible for relaying critical information about the fuel tank's contents to the vehicle's Engine Control Module (ECM). When the ECM detects a breakdown in communication with the fuel level sensor, it triggers the U0175 code. This issue can lead to inaccurate fuel readings, which may result in the vehicle running out of fuel unexpectedly. In some cases, the check engine light may illuminate, alerting the driver to a potential issue. If left unaddressed, a communication error can complicate the vehicle's performance and safety, leading to further diagnostic and repair challenges. Understanding the implications of this code is crucial, as it not only reflects a technical malfunction but also impacts the driver's trust in the vehicle's fuel management system. Common symptoms include erratic fuel gauge readings and fluctuating fuel economy. Addressing the U0175 code promptly can help maintain vehicle performance and reliability.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0175 is present:

  • Check engine light stays on constantly, indicating a potential issue with the fuel level sensor.
  • Fuel gauge fluctuates wildly, leading to confusion about remaining fuel levels.
  • Engine may stall or hesitate due to inaccurate fuel readings, causing performance issues.
  • Decreased fuel economy observed, potentially by 10-15%, as the vehicle may run richer than necessary.
  • Unusual smells of fuel can occur if the sensor is sending erroneous information to the ECM.

Possible Causes

Most common causes of U0175 (ordered by frequency):

  1. Faulty fuel level sensor (60% likelihood): The most common cause of DTC U0175 is a malfunctioning fuel level sensor that fails to communicate properly with the ECM.
  2. Wiring issues (20% likelihood): Damaged or corroded wiring can hinder the connection between the sensor and the ECM, leading to communication errors.
  3. ECM malfunction (10% likelihood): In rare cases, the Engine Control Module itself may be faulty, affecting its ability to receive signals from the fuel level sensor.
  4. Poor ground connection (5% likelihood): A weak or broken ground point can disrupt sensor communication, leading to the U0175 code.
  5. Less common software glitches (5% likelihood): Occasionally, software errors in the vehicle's operating system can create false communication errors.

U0175 Repair Costs

Cost Breakdown by Repair Type

Fuel Level Sensor Replacement

Replacing a faulty fuel level sensor to restore proper communication with the ECM.

  • Total: $150 - $300
  • Success rate: 95%
Wiring Repair

Repairing or replacing damaged wiring connections to ensure proper sensor function.

  • Total: $100 - $200
  • Success rate: 90%
ECM Replacement

In rare cases where the ECM is faulty, replacing it may be necessary.

  • Total: $500 - $1,000
  • Success rate: 80%
Money-Saving Tips for U0175
  • 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 U0175 Diagnosis Process

Follow these systematic steps to accurately diagnose U0175. 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 the fuel level sensor and wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the fuel level sensor and wiring (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 of the fuel level sensor after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation of the fuel level sensor after repairs and clear codes (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 the fuel gauge (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor the fuel gauge (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: Fuel Level Sensor Replacement in a 2018 Ford F-150

Vehicle: 2018 Ford F-150, 35,000 miles

Problem: Customer reported fluctuating fuel gauge readings and check engine light.

Diagnosis: Used GeekOBD APP to retrieve DTCs, confirmed U0175 code. Visual inspection showed damaged wiring.

Solution: Replaced the fuel level sensor and repaired wiring. Cleared codes and verified proper function.

Cost: $250 (sensor - $150, wiring repair - $100)

Result: Fuel gauge readings returned to normal, and the check engine light remained off.

Case Study 2: ECM Replacement in a 2019 Ford Explorer

Vehicle: 2019 Ford Explorer, 25,000 miles

Problem: Customer experienced severe fuel gauge issues and stalling.

Diagnosis: DTC scan revealed U0175 and additional codes indicating ECM failure.

Solution: Replaced the ECM and recalibrated the fuel level sensor. Conducted road tests to ensure functionality.

Cost: $800 (ECM - $600, labor - $200)

Result: Vehicle performance improved, and fuel gauge function restored.

Diagnose U0175

Use GeekOBD APP for professional diagnosis!

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Code Information

Code: U0175
System: Network (Communication, CAN Bus)
Severity: MEDIUM
Category: Network Codes