U0401

The U0401 code indicates an invalid data received from the Engine Control Module (ECM) in a 2008-2012 Honda Accord. This typically points to communication issues between the ECM and other control modules.

The U0401 code in a 2018-2022 Honda Accord indicates a communication issue with the vehicle's control modules, specifically signaling that the data received from the Engine Control Module (ECM) is invalid.

The U0401 code on the 11th Generation Honda Civic (2022-Present) indicates an invalid data received from the Engine Control Module (ECM) to the Transmission Control Module (TCM), signaling a potential communication issue between these components.

The U0401 code in a 2008-2012 Honda Accord indicates a communication issue between the transmission control module (TCM) and the engine control module (ECM), specifically indicating an invalid data received signal.