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Home >> Mazda >> 2001 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1602: Immobilizer Unit-Pcm Communication Line Error >> Condition

DTC P1602: Immobilizer Unit-Pcm Communication Line Error: Condition

DTC is set when there is no Transmission Control Module (TCM) to Powertrain Control Module (PCM) communication. Possible causes are: