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U0401 on JEEP PATRIOT

Invalid Data Received From ECM/PCM A

NHTSA Reports

Severity

caution

Most Affected

2014

Crashes / Fires

0 / 0

Source: NHTSA Complaints Database · SAE J2012

Last reviewed: Aug 8, 2026 Last updated: Aug 8, 2026

Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Jeep Patriot context without treating complaints as confirmed diagnoses.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for U0401.
NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

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 vehicle network, module communication, or data bus 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

'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.