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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - JATCO CVT) >> Diagnostic Information and Procedures >> DTC P0863: Transmission Control Module (TCM) Communication Circuit - (ROM Assembly) >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

At each ignition ON, the transmission control module tries to read the transmission fluid pressure control calibration data stored in the CVT flash ROM assembly. If the transmission control module is unable to read the CVT flash ROM assembly DTC C0863 is set.

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