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27/01/2021 11:49 am
Topic starter
Hey Scotty, I have a 1997 Ford f150 with 260,000 miles with a P0133 code. Both 0@ sensor on the bank 1 side have been replaced. How would I go about finding and fixing the problem?
Thanks
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27/01/2021 12:59 pm
For codes and better understanding/troubleshooting, I start here:
https://www.obd-codes.com/p0133
Did you use OEM sensors? Some possibilities:
- make sure the o2 sensor is really tight and not causing exhaust leaks
- check wiring harness (maybe possible electrical problems)
- check for exhaust leaks before the pre-cat o2 sensor
- make sure MAF and/or MAP sensor is clean
- check for any vacuum leaks at vacuum hoses.
