Vehicle Questions and Answers
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The P1600 diagnostic trouble code (DTC) for your Honda Civic Hybrid indicates that there is an ECM BATT Malfunction, meaning the engine control module has detected a battery issue. This code can be caused by a malfunctioning ECM, open or shorted wiring harness to the ECM, or poor electrical connection to the ECM circuit. Check for any damaged wires under your hood, especially if a critter or technician has been messing with them. Also, try charging the battery. If the issue persists, it's best to have the Civic inspected by a dealership.
The p1600 code on your Honda Civic Hybrid suggests there are problems with the battery voltage, so it's best to have it checked out by a trustworthy car repair shop.
My 2003 Honda Civic's engine light illuminated, and diagnostic codes 1449 and 1600 indicated that the issue lies with the battery, despite the battery light not coming on. Can you tell me what could be causing this confusion?