U0420 on FORD FUSION — Invalid Data Received From Power Steering Control Module A

Q: "What does U0420 mean on a FORD FUSION?"

"U0420 indicates: Invalid Data Received From Power Steering Control Module A. This is a network communication code. 2 FORD FUSION owners have reported this to NHTSA."

Q: "What are the most common causes of U0420 on FORD FUSION?"

"Based on 2 NHTSA reports, the most commonly cited components are: Steering. These percentages are based on the component field in owner complaints."

Q: "Is U0420 serious on my FORD FUSION?"

"Of 2 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 U0420?"

"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 U0420 Means on Your FORD FUSION

U0420 is a diagnostic trouble code indicating: Invalid Data Received From Power Steering Control Module A. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 FORD FUSION owners have reported this issue to NHTSA across model years 2014-2016. Most reports come from the 2014, 2016 model years. The most commonly reported component is Steering (100.0% of reports).

Real FORD FUSION Owner Reports

Source: NHTSA Complaints Database

"I was driving my car when our of no where, the power steering stopped functioning and two messages started to flash on my dashboard: "Steering Assist Fault Service Required" and "Service Advancetrac" This was very dangerous as I could not steer the car."

— 2014 FORD FUSION owner · STEERING · Filed 12/23/2022

"Hello, I was driving towards the hotel I was staying at when I heard some squeaky noises when I was turning my car (this was at night). The next day, I was leaving the parking garage, about to drive onto a main road when my power steering went."

— 2016 FORD FUSION owner · STEERING · Filed 03/17/2022

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

📊 Complaint Trend by Model Year

1

'14

1

'16

Common Causes on FORD FUSION

Based on NHTSA complaint component analysis for this vehicle.

STEERING 100%

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 U0420 mean on a FORD FUSION? ▾

U0420 indicates: Invalid Data Received From Power Steering Control Module A. This is a network communication code. 2 FORD FUSION owners have reported this to NHTSA.

What are the most common causes of U0420 on FORD FUSION? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Steering. These percentages are based on the component field in owner complaints.

Is U0420 serious on my FORD FUSION? ▾

Of 2 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 U0420? ▾

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.

U0420 on Other Vehicles

→ All codes reported on FORD FUSION