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Home >> Mazda >> 2002 >> MX-5 Miata LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1601: Pcm-TCM Communication Line Error >> Detection Condition
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Detection Condition

DTC is set when there is no communication between Powertrain Control Module (PCM) and Transmission Control Module (TCM). Open or short circuit between PCM and TCM.

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