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What happens when the Big Dipper oxygen sensor is broken?
The Big Dipper oxygen sensor is broken.

1, engine power is insufficient, acceleration is slow, and tail gas emits black smoke.

2. The engine will idle unsteadily, the exhaust will have abnormal sound and choking smell, and the fuel consumption will increase.

3. If the oxygen sensor fails, the idle speed is unstable and the consumption is too large.