U3003 on FORD FUSION — Battery Voltage

Q: "What does U3003 mean on a FORD FUSION?"

"U3003 indicates: Battery Voltage. This is a network manufacturer-specific code. 3 FORD FUSION owners have reported this to NHTSA."

Q: "What are the most common causes of U3003 on FORD FUSION?"

"Based on 3 NHTSA reports, the most commonly cited components are: Steering, Power Train,Engine,Forward Collision Avoidance, Electrical System. These percentages are based on the component field in owner complaints."

Q: "Is U3003 serious on my FORD FUSION?"

"Of 3 NHTSA reports for this code on FORD FUSION, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my FORD FUSION shows U3003?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What U3003 Means on Your FORD FUSION

U3003 is a diagnostic trouble code indicating: Battery Voltage. This code relates to the network manufacturer-specific system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

3 FORD FUSION owners have reported this issue to NHTSA across model years 2010-2014. Most reports come from the 2010, 2013 model years.

Real FORD FUSION Owner Reports

Source: NHTSA Complaints Database

"The electric power steering stopped working in august 2014 while i was driving the vehicle. self test showed codes c1277, u3003, b1c83, b10af, p0606b, c100b. i had to pay to have it replaced at the ford dealership."

— 2010 FORD FUSION owner · STEERING · Filed 08/13/2014

"The engine makes a very loud ticking and whirring sound, there are also quite a few electrical components that will not communicate with the PCM causing errors on the vehicle code such as a switch component failure U2002-96 Battery voltage circuit below and above threshold U3003-16 and U3003-17, ele"

— 2013 FORD FUSION owner · POWER TRAIN,ENGINE,FORWARD COLLISION AVOIDANCE · Filed 02/06/2024

"Complete electrical power failure due to persistent drain on battery. after jumpstart, car was operational; however, there is intermittent failure when the car is not in use for 24 hours. intermittent hard fault with dtc p0887 in sobdmc (secondary on board diagnostics model c)."

— 2014 FORD FUSION owner · ELECTRICAL SYSTEM · Filed 12/13/2016

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'10

1

'13

1

'14

Common Causes on FORD FUSION

Based on NHTSA complaint component analysis for this vehicle.

STEERING 33.3%

POWER TRAIN,ENGINE,FORWARD COLLISION AVOIDANCE 33.3%

ELECTRICAL SYSTEM 33.3%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does U3003 mean on a FORD FUSION? ▾

U3003 indicates: Battery Voltage. This is a network manufacturer-specific code. 3 FORD FUSION owners have reported this to NHTSA.

What are the most common causes of U3003 on FORD FUSION? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Steering, Power Train,Engine,Forward Collision Avoidance, Electrical System. These percentages are based on the component field in owner complaints.

Is U3003 serious on my FORD FUSION? ▾

Of 3 NHTSA reports for this code on FORD FUSION, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my FORD FUSION shows U3003? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.