Quick Answer
U0119 means: DTC U0119 means there’s a communication error with the fuel level sensor.
Can I drive with U0119? It's advisable to address this issue as soon as possible to avoid potential engine performance problems.
Common Questions
What does U0119 mean and how does it affect my car?
DTC U0119 signifies that the engine control module can't communicate with the fuel level sensor, leading to potential inaccuracies in fuel readings and affecting overall vehicle efficiency.
What are the most common causes of U0119 and how much does it cost to fix?
Common causes include a faulty fuel level sensor (about $150-$300), damaged wiring (around $100-$200), or issues with the ECM. Costs can vary based on labor and parts.
Can I drive my car with U0119 or should I stop immediately?
While you can drive, it's risky as inaccurate fuel readings can lead to running out of fuel unexpectedly. It's best to address this issue promptly.
How can I diagnose U0119 myself using GeekOBD APP?
You can use the GeekOBD APP to scan your vehicle for DTCs, view live data from the fuel level sensor, and check for any freeze frame data to see when the issue occurred.
What vehicles are most commonly affected by U0119?
This code is frequently seen in vehicles like the 2014-2020 Ford F-150, and other models that share similar fuel sensor systems. Check for any specific recalls or TSBs related to your vehicle.
How can I prevent U0119 from happening again?
Regularly inspect and maintain electrical connections and sensors in your vehicle. Keeping up with routine maintenance can help prevent issues from arising.
What is U0119?
The DTC U0119 indicates that your vehicle's engine control module (ECM) is experiencing a communication issue with the fuel level sensor 'A'. This can lead to inaccurate fuel level readings, which may result in running out of fuel unexpectedly or an incorrect fuel gauge display. The problem usually stems from wiring faults, sensor malfunctions, or issues with the communication network in the vehicle. In simpler terms, your car's computer is unable to get the information it needs from the fuel level sensor, which can affect performance and fuel management. This code is particularly prevalent in several models, including the 2014-2020 Ford F-150, and may also appear in other vehicles from various manufacturers that use similar fuel level sensor architecture. Ignoring this code can lead to more severe issues over time, including potential engine performance problems, so addressing it promptly is crucial. Regular maintenance checks, especially where electrical components are concerned, can help prevent the occurrence of this code.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0119 is present:
- The check engine light remains illuminated, indicating a fault detected in the system.
- Fuel gauge shows erratic readings or remains stuck at empty, leading to uncertainty about fuel levels.
- Engine performance may fluctuate unexpectedly, especially during acceleration or deceleration.
- Increased fuel consumption as the ECU may adjust fuel delivery based on incorrect data.
- Vehicle may stall unexpectedly if the fuel level sensor completely fails.
Possible Causes
Most common causes of U0119 (ordered by frequency):
- The most common cause is a faulty fuel level sensor, which can account for about 50% of U0119 cases. This usually happens due to wear and tear over time.
- Another frequent cause is damaged wiring or connectors in the communication circuit, which could be responsible for around 30% of cases. Corrosion or frayed wires can disrupt signals.
- A third cause could be a malfunctioning ECM or software issues, which can prevent proper communication. Regular software updates may help mitigate this.
- Less common but serious causes include a failed fuel pump module, which might lead to additional repairs if not addressed.
- A rare cause could be an issue with the entire vehicle's communication network, like a failing CAN bus, but this is generally less frequent.
U0119 Repair Costs
Cost Breakdown by Repair Type
Fuel Level Sensor Replacement
Replacing a faulty fuel level sensor typically resolves the U0119 code.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connectors can also fix communication issues.
- Total: $100 - $200
- Success rate: 80%
Money-Saving Tips for U0119
- 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 U0119 Diagnosis Process
Follow these systematic steps to accurately diagnose U0119. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Start with an initial visual inspection of wiring and connectors related to the fuel level sensor for any visible damage or corrosion (5-10 minutes)
Step 1: Start with an initial visual inspection of wiring and connectors related to the fuel level sensor for any visible damage or corrosion (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all DTCs and freeze frame data to understand the fault context (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all DTCs and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Conduct component testing on the fuel level sensor using a multimeter to check for expected voltage and resistance values (20-30 minutes)
Step 3: Conduct component testing on the fuel level sensor using a multimeter to check for expected voltage and resistance values (20-30 minutes).
Step 4: Step 4: Run a system function test to ensure that the fuel level sensor communicates effectively with the ECM after any repairs (10-15 minutes)
Step 4: Run a system function test to ensure that the fuel level sensor communicates effectively with the ECM after any repairs (10-15 minutes).
Step 5: Step 5: Perform a road test under various driving conditions to verify that the issue has been resolved and that the vehicle operates normally (15-20 minutes)
Step 5: Perform a road test under various driving conditions to verify that the issue has been resolved and that the vehicle operates normally (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: Fuel Level Sensor Replacement in a 2018 Ford F-150
Vehicle: 2018 Ford F-150, 45,000 miles
Problem: Customer reported erratic fuel gauge readings and check engine light.
Diagnosis: DTC U0119 confirmed via GeekOBD APP; fuel level sensor was found to be malfunctioning.
Solution: Replaced the fuel level sensor and repaired some wiring connections.
Cost: $250 (including parts and labor)
Result: Fuel gauge readings returned to normal, and check engine light cleared successfully.
Case Study 2: Wiring Repair in a 2016 Chevrolet Silverado
Vehicle: 2016 Chevrolet Silverado, 55,000 miles
Problem: Customer noticed the check engine light and inconsistent fuel gauge.
Diagnosis: DTC U0119 detected; a visual inspection revealed corroded connectors.
Solution: Cleaned connectors and repaired damaged wiring.
Cost: $150 (parts and labor)
Result: Resolved the issue with the fuel gauge, and the check engine light was turned off.