2003 Ford f-150 4.6, o2 shows bad, bank 2 sensor 2, won't smog

Asked by dcain4u Apr 30, 2016 at 09:30 PM about the 2003 Ford F-150 XL Extended Cab 4WD SB

Question type: Maintenance & Repair

I have an 03 f-150, Check engine light is on. Replaced o2 sensor,  MAF sensor.
Clear the CEL,  but the first time I kill the truck and start it back,  within 2
minutes the CEL comes back on showing o2 sensor,  bank 2 sensor 2.  Checked
vacuum hoses,  wires,  etc.  What should I check now?

1 Answer
14,475

Guy answered 8 years ago

You state that you replaced the O2 sensor, did you replace the rear one on the dr side?

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