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P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1) - In
With an error code of p0420 is it always necessary to have the P0497 after being tuned? P0420 replaced converter shops
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P0174 Code: System Too Lean (Cylinder Bank 2)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1) - In
With an error code of p0420 is it always necessary to have the
