What are the symptoms of a faulty car computer board?

1 Answers
JuliannaFitz
07/28/25 8:28pm
Symptoms of a faulty car computer board include abnormal vehicle operation and unusual odors from the computer board. Below are specific manifestations of a faulty car computer board: 1. Abnormal vehicle operation, such as irregularities during startup and driving. For example, the engine may suddenly stall and become difficult or impossible to restart. The car computer board may emit unusual odors, such as from a short circuit. Temperature abnormalities may occur, where the water temperature gauge exceeds normal values or feels excessively hot to the touch. The car may produce unusual noises, such as engine knocking. 2. Causes of computer board damage include vehicle immersion in water, leading to corrosion of the board, resulting in broken or adhered component pins or damaged components; and during vehicle charging, issues such as the charger voltage being set too high, reversed polarity, or loose battery connections during starter motor or engine operation, causing the generator to directly power the computer board, which can burn out high-power voltage regulator diodes and other components.
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