What is the cause of the Cruze code89 fault?

1 Answers
LilyRose
07/30/25 1:30am
When the Chevrolet Cruze dashboard displays code89, it indicates a fault with the engine oil pressure sensor in the Cruze. Below are the specific details about the oil pressure sensor: 1. Function: The oil pressure sensor in a vehicle is a crucial device for monitoring the engine's oil pressure. The data it detects helps ensure the engine operates normally. 2. Working Principle: The amplified pressure signal is transmitted via a signal wire to the oil pressure gauge, altering the current ratio between the two coils inside the gauge to indicate the engine's oil pressure. The pressure signal, after voltage and current amplification, is also compared with a preset alarm voltage in the alarm circuit. If the signal falls below the alarm voltage, the alarm circuit outputs an alarm signal, which then illuminates the warning light via the alarm wire.
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