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Home >> Toyota >> 2016 >> 4Runner Limited, AWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Hydraulic Brake Booster) - Diagnostic Codes (43, C0226-C1422) >> VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) >> DTC C1203: ECM Communication Circuit Malfunction [08/2015 - 08/2019] >> Description

DTC C1203: ECM Communication Circuit Malfunction [08/2015 - 08/2019]: Description

The circuit is used to send control information from the skid control ECU to the ECM, and engine control information from the ECM to the skid control ECU via the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
C1203 The engine/drivetrain specification and/or destination information from the ECM does not match the skid control ECU data. ECM