C1203 LEXUS - ECM Communication Circuit Malfunction
Tech notesDTC C1203/95 is output when an incorrect ECU is installed. If initialization is performed and learning occurs with an incorrect ECU installed, operations and functions will differ from that stored when the vehicle was shipped from the factory. Therefore, make sure that learning occurs properly.
C1203 Lexus DescriptionThe circuit is used to send TR(A)C and VSC information from the skid control ECU to the power management control ECU, and hybrid control system information from the power management control ECU to the skid control ECU via the CAN communication system.
Identification information sent from other ECUs is stored when shipped from the factory and used as default values.
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C1203 LEXUS CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the C1203 Lexus code? Have you replaced any parts?
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