U0401 on HONDA CR-V — Invalid Data Received From ECM/PCM A

Q: "What does U0401 mean on a HONDA CR-V?"

"U0401 indicates: Invalid Data Received From ECM/PCM A. This is a network communication code. 2 HONDA CR-V owners have reported this to NHTSA."

Q: "What are the most common causes of U0401 on HONDA CR-V?"

"Based on 2 NHTSA reports, the most commonly cited components are: Power Train, Electrical System,Unknown Or Other,Engine. These percentages are based on the component field in owner complaints."

Q: "Is U0401 serious on my HONDA CR-V?"

"Of 2 NHTSA reports for this code on HONDA CR-V, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my HONDA CR-V shows U0401?"

"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 U0401 Means on Your HONDA CR-V

U0401 is a diagnostic trouble code indicating: Invalid Data Received From ECM/PCM 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 HONDA CR-V owners have reported this issue to NHTSA across model years 2018-2019. Most reports come from the 2018, 2019 model years. The most commonly reported component is Power Train (50.0% of reports).

Real HONDA CR-V Owner Reports

Source: NHTSA Complaints Database

"2018 cr-v (~38,200 miles) unexpectedly halted (loss of power - engine kept running) going ~35 mph on lakeville hwy/116 in busy traffic and showed engine/emissions check light and other warning lights."

— 2018 HONDA CR-V owner · POWER TRAIN · Filed 07/29/2020

"My wife was driving the Honda CRV (61k miles, 2019) through a parking lot when suddenly all kinds of buzzers and warning lights came on. There was no warning anything was wrong before this."

— 2019 HONDA CR-V owner · ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE · Filed 11/30/2024

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

📊 Complaint Trend by Model Year

1

'18

1

'19

Common Causes on HONDA CR-V

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN 50%

ELECTRICAL SYSTEM,UNKNOWN or OTHER,ENGINE 50%

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 U0401 mean on a HONDA CR-V? ▾

U0401 indicates: Invalid Data Received From ECM/PCM A. This is a network communication code. 2 HONDA CR-V owners have reported this to NHTSA.

What are the most common causes of U0401 on HONDA CR-V? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Power Train, Electrical System,Unknown Or Other,Engine. These percentages are based on the component field in owner complaints.

Is U0401 serious on my HONDA CR-V? ▾

Of 2 NHTSA reports for this code on HONDA CR-V, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my HONDA CR-V shows U0401? ▾

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.