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Home >> Saab >> 2000 >> 9-3 Base, 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0605: Internal Control Module Malfunction
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DTC P0605: Internal Control Module Malfunction

WARNING: This page is about a different car, the 2000 Saab 9-5 and 1999 Saab 9-5. However, it is still accessible from the selected car via links, so may be relevant.

Replace ECM. See ENGINE CONTROL MODULE (ECM) under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article. Connect TECH 2 scan tool to Data Link Connector (DLC). Turn ignition on. Clear DTCs from Trionic T-7 Engine Management System. Turn ignition off. Wait 10 seconds, then reset limp-home mechanism. See RESETTING LIMP-HOME SOLENOID  under TESTING & REPAIR PROCEDURE. Clear DTCs from all systems. Test drive vehicle for 5 minutes under various load conditions. Recheck for stored DTCs. If DTC P0605 is present, check electrical connections at ECM and limp-home solenoid. See appropriate wiring diagram in WIRING DIAGRAMS article. Repair as necessary. If no problems are found, substitute known good ECM and retest system.

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