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Home >> Jaguar >> 2000 >> XJ8 Base >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Codes - Powertrain >> Diagnostic Trouble Codes >> DTC P1609: ECM microprocessor-to-microprocessor communication failure >> Possible Causes
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Possible Causes

ECM FCCP (programming) circuit (ECM pin EM11-3) short circuit to ground

ECM failure