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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (W/O Canister Pump) - Diagnostic Codes (P2610-U0129) & Circuit / Symptom Tests >> SFI SYSTEM (w/o Canister Pump Module) >> DTC U011B: Lost Communication with Rocker Arm Control Module "A" [10/2017 - 12/2021] >> Description
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DTC U011B: Lost Communication with Rocker Arm Control Module "A" [10/2017 - 12/2021]: Description

The ECM and continuously variable valve lift controller assembly send signals via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
U011B Lost Communication with Rocker Arm Control Module "A" CAN communication stops (1 trip detection logic).
  • CAN communication circuit
  • Continuously variable valve lift controller assembly
  • ECM
Comes on DTC stored