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Home >> Toyota >> 2021 >> Prius LE AWD-e >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Pre-Collision System - Diagnostic Codes) >> Pre-Collision System >> DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2021 - ] >> Description

DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2021 - ]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

for HV Model: 

for Gasoline Model: 

DTC No. Detection Item DTC Detection Condition Trouble Area
U0418-81 Invalid Data Received from Brake System Control Module Invalid Serial Data Received for HV Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the forward recognition camera receives a brake control system malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.

for Gasoline Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the forward recognition camera receives a brake control system malfunction signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more.
  • Electronically controlled brake system
  • Forward recognition camera