Quick Answer
B0173 means: B0173 indicates an issue with the fuel level sensor circuit performance.
Can I drive with B0173? It is advisable to diagnose and repair this issue promptly to avoid further complications.
Common Questions
What does B0173 mean and how does it affect my car?
The B0173 code signifies a malfunction in the fuel level sensor circuit, which can lead to inaccurate fuel gauge readings and potential engine performance issues. Ignoring this code may result in stalling or running out of fuel unexpectedly, compromising your safety and vehicle's efficiency.
What are the most common causes of B0173 and how much does it cost to fix?
Common causes include a faulty fuel level sensor, damaged wiring, or ECM issues. Repair costs typically range from $150 to $350 for sensor replacement, depending on your vehicle make and model.
Can I drive my car with B0173 or should I stop immediately?
While you may still drive the vehicle, it's advisable to address the B0173 code promptly. Ignoring it can lead to erratic fuel gauge readings and potential stalling.
How can I diagnose B0173 myself using GeekOBD APP?
Using the GeekOBD APP, connect it to your vehicle’s OBD2 port, retrieve the trouble codes, and monitor real-time data from the fuel level sensor to determine if it's functioning correctly.
What vehicles are most commonly affected by B0173?
The B0173 code is often found in 2013-2018 Chevrolet Silverado and 2014-2017 GMC Sierra models. If you own one of these vehicles, be particularly vigilant for symptoms related to fuel level accuracy.
How can I prevent B0173 from happening again?
Regular maintenance of the fuel system, including checking connections and ensuring the fuel tank is free from debris, can help prevent B0173 from recurring.
What is B0173?
The DTC B0173 code indicates there is a problem with the fuel level sensor circuit in your vehicle, specifically regarding its range or performance. This trouble code is most prevalent in vehicles like the 2013-2018 Chevrolet Silverado and the 2014-2017 GMC Sierra. When the engine control module (ECM) detects that the signal from the fuel level sensor is either out of range or not functioning as expected, it triggers the B0173 code. The fuel level sensor is responsible for providing accurate fuel level readings to the ECM, which in turn helps manage fuel efficiency and engine performance. If this sensor malfunctions, you may experience symptoms like erratic fuel gauge readings, the check engine light illuminating, and, in some cases, engine performance issues due to incorrect fuel management. Failure to address this issue can lead to further complications, including fuel system damage or poor engine performance. Therefore, understanding and diagnosing this DTC is crucial for maintaining your vehicle's health and efficiency.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0173 is present:
- The fuel gauge fluctuates unexpectedly, showing inaccurate fuel levels.
- Check engine light illuminates, often indicating a fuel-related issue.
- Engine performance may suffer, with symptoms such as stalling or hesitation during acceleration.
- A noticeable decrease in fuel efficiency, potentially by 10-20%.
- Inconsistent readings can lead to running out of fuel unexpectedly.
Possible Causes
Most common causes of B0173 (ordered by frequency):
- A faulty fuel level sensor, which is the most common cause of the B0173 code, accounting for about 60% of cases due to wear and tear.
- Damaged wiring or connectors within the fuel level sensor circuit can lead to poor signal transmission, often caused by corrosion or fraying.
- ECM issues can also trigger this code, though they are less common; it may misinterpret the sensor's readings.
- Physical obstructions in the fuel tank that affect the sensor's operation, which might happen after a fuel tank repair or maintenance.
- Rarely, software issues in the vehicle's ECM could lead to false readings, requiring a software update.
B0173 Repair Costs
Cost Breakdown by Repair Type
Fuel Level Sensor Replacement
Replacing the faulty fuel level sensor is the most effective solution.
- Total: $150 - $350
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring or connectors.
- Total: $50 - $150
- Success rate: 80%
ECM Update
Updating the vehicle’s ECM software to resolve potential miscommunication issues.
- Total: $100 - $200
- Success rate: 70%
Money-Saving Tips for B0173
- 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 B0173 Diagnosis Process
Follow these systematic steps to accurately diagnose B0173. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection of the fuel level sensor and wiring harness for damage or loose connections (5-10 minutes)
Step 1: Conduct an initial visual inspection of the fuel level sensor and wiring harness for damage or loose connections (5-10 minutes).
Step 2: Step 2: Use a diagnostic scanner like the GeekOBD APP to read the DTC and any additional codes that may be present (10-15 minutes)
Step 2: Use a diagnostic scanner like the GeekOBD APP to read the DTC and any additional codes that may be present (10-15 minutes).
Step 3: Step 3: Check the fuel level sensor resistance with a multimeter to ensure it falls within manufacturer specifications (20-30 minutes)
Step 3: Check the fuel level sensor resistance with a multimeter to ensure it falls within manufacturer specifications (20-30 minutes).
Step 4: Step 4: Clear any codes and run the vehicle to see if the B0173 code reappears, confirming the sensor's functionality (10-15 minutes)
Step 4: Clear any codes and run the vehicle to see if the B0173 code reappears, confirming the sensor's functionality (10-15 minutes).
Step 5: Step 5: Conduct a road test to assess vehicle performance and monitor the fuel level gauge for any inconsistencies (15-20 minutes)
Step 5: Conduct a road test to assess vehicle performance and monitor the fuel level gauge for any inconsistencies (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 2015 Chevrolet Silverado
Vehicle: 2015 Chevrolet Silverado 1500, 85,000 miles
Problem: Customer reported fluctuating fuel gauge and check engine light on.
Diagnosis: Initial scans confirmed B0173 code; visual inspection revealed corrosion on the fuel level sensor connector.
Solution: Replaced the fuel level sensor and repaired the wiring harness.
Cost: $275 (sensor $200, labor $75)
Result: Post-repair, the fuel gauge functioned correctly, and the check engine light remained off.
Case Study 2: Wiring Repair in a 2017 GMC Sierra
Vehicle: 2017 GMC Sierra 1500, 60,000 miles
Problem: Customer experienced erratic fuel gauge readings.
Diagnosis: B0173 code was retrieved; further inspection showed damaged wiring.
Solution: Repaired the wiring and cleared the codes.
Cost: $120 (labor $100, wiring parts $20)
Result: Fuel gauge readings stabilized, and no further issues were reported.