possible causes p1139 and p0137 1996 Cadillac Eldorado ETC

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possible causes p1139 and p0137 1996 Cadillac Eldorado ETC

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Reynaldo · Answer 1 · 2018-12-04T22:28:30+0000

P1139 H02S insufficient switching Bank 1 Sensor 2
P0137 Circuit low voltage Bank 1 Sensor 2
You have 2 code both pointing to the downstream 02 sensor on Bank 1, this is a failing downstream 02 sensor .

possible causes p1139 and p0137 1996 Cadillac Eldorado ETC

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