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Home >> Geo >> 1995 >> Metro Base, 2D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes) >> Circuit Tests >> DTC P0603 - Powertrain Control Module (Pcm) Memory Reset >> Diagnosis & Repair

Diagnosis & Repair

WARNING: This page is about a different car, the 1996 Pontiac Firefly and 1996 Geo Metro. However, it is still accessible from the selected car via links, so may be relevant.

Connect scan tool to DLC. Select CLEAR INFORMATION function. Road test vehicle. Crank engine if vehicle does not start. If DTC P0603 resets, replace PCM. Retest system. If DTC P0603 does not reset, check for an intermittent problem. See TESTS W/O CODES article.

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