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

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

"U0401 indicates: Invalid Data Received From ECM/PCM A. This is a network communication code. 3 JEEP COMPASS owners have reported this to NHTSA."

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

"Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine, Power Train, Vehicle Speed Control,Electronic Stability Control (Esc),Engine. These percentages are based on the component field in owner complaints."

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

"Of 3 NHTSA reports for this code on JEEP COMPASS, 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 COMPASS 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 COMPASS

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.

3 JEEP COMPASS owners have reported this issue to NHTSA across model years 2014-2015. Most reports come from the 2014, 2015 model years.

Real JEEP COMPASS Owner Reports

Source: NHTSA Complaints Database

"Code u0401. ecm/pcm. check engine light, esc light, and ecm lights came on while driving, jeep lost acceleration, and knocked when we came to a stop. incident hastened on a local road while moving at 45 mph. turned off vehicle and restarted. problem persisted and we had the vehicle towed home."

— 2014 JEEP COMPASS owner · POWER TRAIN · Filed 04/14/2018

"While driving on the highway on two separate occasions now, my jeep suddenly loses power and decelerates. the engine light, electronic throttle control light and stability control light come on, the jeep runs very rough and will not accelerate."

— 2015 JEEP COMPASS owner · VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 12/16/2018

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

📊 Complaint Trend by Model Year

2

'14

1

'15

Common Causes on JEEP COMPASS

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN,ENGINE 33.3%

POWER TRAIN 33.3%

VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 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 U0401 mean on a JEEP COMPASS? ▾

U0401 indicates: Invalid Data Received From ECM/PCM A. This is a network communication code. 3 JEEP COMPASS owners have reported this to NHTSA.

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

Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine, Power Train, Vehicle Speed Control,Electronic Stability Control (Esc),Engine. These percentages are based on the component field in owner complaints.

Is U0401 serious on my JEEP COMPASS? ▾

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

What should I do if my JEEP COMPASS 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.