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Username Post: 04 Impala 3.4 PO135        (Topic#355596)
Posts: 112

Reg: 11-19-15
03-13-19 07:34 AM - Post#2761979    

CEL came on when returning home 500 miles away.Car ran and started fine.Got home and put my code reader on to find 2 codes-but only PO135 present.So I replaced the upstream bank one O2 sensor (closest to firewall) with a direct fit/but cheap ebay sensor.After 2-3 starts the CEL is back on.Fuse is good and voltage is present going to sensor with key on.I even ohm checked the sensor which reads within spec.I have seen on various search results mention that ONLY Denso sensors are "Chevy friendly".Any input on this?

The bearer of gossip is a small untrustworthy person who takes delight in someone else's problems. Avoid them.
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