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Chasing an SES light... Chasing an SES light...
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Old 12-23-2018, 04:48 PM
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Join Date: Dec 2018
Location: Tidewater Virginia, USA
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Muleears is on a distinguished road
Chasing an SES light...
New to me '05 X5, 290K miles. I have a NT 510 that tells me I have a bad O2 sensor (alternately on each bank). I have replaced both upstream O2 sensors and I still get the bad upstream O2 code. Could this be a bad MAF? I cleaned the MAF with CRC MAF cleaner, cleared the code but it came back after about 10 miles. So as it stands now, I have a "clean" MAF and two new upstream O2 sensors, but still get the O2 sensor error code. Where do I go from here?
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2005 X5 3.0i 315,000 miles!
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