What does code U046D mean?

Q: What does code U046D mean?

Invalid Data Received From Fuel Pump Control Module B. U046D means the engine control module (ECM) or another supervisory module has received invalid or missing data from the fuel pump control module B over the vehicle's controller area network (CAN) bus. The computer detected a message that was out of range, corrupted, or absent when expected, so it cannot trust the fuel pump control module's status.

DTC codes / U04xx · Invalid data received from a module / U046D

U046DInvalid Data Received From Fuel Pump Control Module B

U046D means the engine control module (ECM) or another supervisory module has received invalid or missing data from the fuel pump control module B over the vehicle's controller area network (CAN) bus. The computer detected a message that was out of range, corrupted, or absent when expected, so it cannot trust the fuel pump control module's status.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaInvalid data received from a module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.