Question about 2000 Chevrolet 3500
P0137 refers to the second oxygen sensor on the car. It means the O2 oxygen sensor's voltage remained low for longer than
2 minutes. Bank
1 Sensor 2 is located to the rear of the catalytic converter.
This rear sensor's signal is less active than the signal produced by the sensor closer to the manifold. However, if the car senses the sensor is inactive, this will set off the check engine light as well.
Replace that second sensor and it should cure your problem.
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Posted on Sep 05, 2010
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Posted on Jan 02, 2017
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