What does code U3011 mean?

Q: What does code U3011 mean?

Ignition Input Off. U3011 is a generic network communication code indicating that a module on the vehicle's controller area network (CAN) bus has reported the ignition input signal as off when it should be on. The computer detected a mismatch between the ignition switch state and the voltage seen at a module's ignition input circuit, which can prevent that module from waking up or communicating properly.

DTC codes / U30xx · Network wiring and bus faults / U3011

U3011Ignition Input Off

U3011 is a generic network communication code indicating that a module on the vehicle's controller area network (CAN) bus has reported the ignition input signal as off when it should be on. The computer detected a mismatch between the ignition switch state and the voltage seen at a module's ignition input circuit, which can prevent that module from waking up or communicating properly.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaNetwork wiring and bus faults

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