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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (W/ Canister Pump) - Diagnostic Codes (P2237-U0155) & System Tests >> SFI SYSTEM (w/ Canister Pump Module) >> DTC U011B: Lost Communication with Rocker Arm Control Module "A" [02/2017 - 05/2018] >> Monitor Description
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Monitor Description

When there is a CAN communication malfunction between the ECM and the continuously variable valve lift controller assembly, a DTC is stored and the MIL illuminates.