What does code U0515 mean?

Q: What does code U0515 mean?

Invalid Data Received From Remote Function Actuation Module. U0515 means the module that coordinates remote functions such as keyless entry, remote start, or telematics sent data that the receiving module judged invalid over the vehicle's communication network. The computer detected a message from the Remote Function Actuation Module that failed its internal plausibility or checksum validation, so it flagged the data as untrustworthy rather than treating it as a valid command.

DTC codes / U05xx · Network communication / U0515

U0515Invalid Data Received From Remote Function Actuation Module

U0515 means the module that coordinates remote functions such as keyless entry, remote start, or telematics sent data that the receiving module judged invalid over the vehicle's communication network. The computer detected a message from the Remote Function Actuation Module that failed its internal plausibility or checksum validation, so it flagged the data as untrustworthy rather than treating it as a valid command.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaNetwork communication

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