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Home >> Saab >> 1996 >> 9000 CS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - MOTRONIC 5.2 System >> Circuit Tests >> DTC P0601 &/Or P0604 - Electronic Control Module (ECM) Malfunction >> Possible Causes:

Possible Causes:

Electrostatic discharge (ESD) fault.
External damage.
ECM input circuit(s) shorted or open.

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