U0441

Invalid Data Received From Emissions Critical Control Information

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine operation
Problems starting the engine

Causes

Open or short circuit in the communication circuit
Engine control module (ECM) malfunction
Emission control module malfunction
Software problems
Corroded or damaged connectors

How to Fix

Check the integrity of the wiring harness and connectors
Check the functionality of the engine control module
Check the performance of the emission control module
Update control module software
Check for fault codes in other modules

Related codes

U0440 U0442 U0443