P3984
OBD Code P3984
12 articles · 2 makes affected
Owner Statistics
Based on 339,044 real owner discussions • 6708 confirmed solutions
$403
Average Repair Cost
2%
Success Rate
22%
DIY Repairs
339,044
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Issues by Vehicle
FORD
2019 Fiesta
Why Your 2019 Fiesta Gets Bad Gas Mileage in Traffic (And the Simple Fix)
1.8K sources
2019 Fiesta
Why Your Modified 2019 Fiesta Might Be Leaking Oil
1.3K sources
2019 Fiesta
Why Your 2019 Ford Fiesta Hard Starts and How to Fix It
1.2K sources
2019 Fiesta
How to Find and Fix That Annoying Rattle in Your Ford Fiesta
1.9K sources
2019 Fiesta
Stopping the Click: How Fiesta Owners Fix Wheel Rubbing Noise
1.9K sources
2019 Fiesta
Why Your Fiesta Squeals During Hard Driving (And When to Worry)
1.9K sources
2020 Mustang
Stop the Squeal: Fixing Your Mustang's Buzzing Dashboard Noise
1.7K sources
2020 Mustang
Why Your 2020 Mustang Has No Power (The Trunk Battery Fix)
1.7K sources
2020 Mustang
Why Your Mustang's Brakes Are Smoking (It's Probably the Wheels)
1.8K sources