U0401 on JEEP PATRIOT — Invalid Data Received From ECM/PCM A

Q: "What does U0401 mean on a JEEP PATRIOT?"

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

Q: "What are the most common causes of U0401 on JEEP PATRIOT?"

"Based on 2 NHTSA reports, the most commonly cited components are: Electrical System,Vehicle Speed Control,Engine, Electronic Stability Control (Esc),Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is U0401 serious on my JEEP PATRIOT?"

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

Q: "What should I do if my JEEP PATRIOT 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 JEEP PATRIOT

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 JEEP PATRIOT owners have reported this issue to NHTSA across model years 2014. Most reports come from the 2014 model year. The most commonly reported component is Electrical System,Vehicle Speed Control,Engine (50.0% of reports).

Real JEEP PATRIOT Owner Reports

Source: NHTSA Complaints Database

"The exhaust manifolds seem to be cracking in the same place."

— 2014 JEEP PATRIOT owner · ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,ENGINE · Filed 04/14/2019

"Traveling 40 mph engine misfires check engine, throttle body, and traction warning lights on. vehicle will not accelerate. turn off engine resets throttle body and traction control warning lights check engine light remains on vehicle accelerates normally."

— 2014 JEEP PATRIOT owner · ELECTRONIC STABILITY CONTROL (ESC),ENGINE,FUEL/PROPULSION SYSTEM · Filed 01/31/2020

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

📊 Complaint Trend by Model Year

2

'14

Common Causes on JEEP PATRIOT

Based on NHTSA complaint component analysis for this vehicle.

ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,ENGINE 50%

ELECTRONIC STABILITY CONTROL (ESC),ENGINE,FUEL/PROPULSION SYSTEM 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 JEEP PATRIOT? ▾

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

What are the most common causes of U0401 on JEEP PATRIOT? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Electrical System,Vehicle Speed Control,Engine, Electronic Stability Control (Esc),Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is U0401 serious on my JEEP PATRIOT? ▾

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

What should I do if my JEEP PATRIOT 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.