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How do you fix Bank 1 Sensor 1 signal below 45v air fuel ratio to lean?
Wiki User
∙ 15y ago
What you have written does not sound familiar, the closest thing I can come to is that you have a low voltage reading on the upstream O2 sensor on the #1 cylinder side, replace the O2 sensor, reset the ECM and see if that remedies the problem.
Wiki User
∙ 15y ago
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