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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

Possible Causes

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

ECM failure

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