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The P1600 code in a 1997 Geo Prism indicates a problem related to the Engine Control Module (ECM) or a communication issue between the ECM and other modules in the vehicle. This code typically suggests that the ECM is unable to receive a signal from the vehicle's sensors or components, which may affect engine performance. It's advisable to check the wiring and connections to the ECM, as well as inspect relevant sensors for faults. If necessary, using a scan tool can help diagnose the specific issue further.

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AnswerBot

2w ago

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