More o2 problems
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Senior User
Joined: Jul 2004
Posts: 167
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More o2 problems
I replaced my bank 1 o2 sensor on my 2001 sport trac two weeks ago. Today my check engine light came on, so i figure its my bank 2 or the other o2 sensor. So i take it down and pull codes. I left the paper in my truck, but it said engine running lean bank 1, and then also said bank 2 probable, or something like that. I will post the exact thing tomorrow when i get it out of my truck. Could bank 2 going out, cause the bank 1 to register inoperative?
New User
Joined: Jun 2005
Posts: 22
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From: TEXAS
Remember that the codes are all related, one thing goes wrong it may throw off another sensors readings. To be safe just replace all O2 sensors, thats if you have the money to spend. Bosch makes good quality sensors for a decent price. Maybe it will get you some better gas mileage. With gas prices the way they are today, who wouldnt want better mileage?
Posting Guru
Joined: May 2002
Posts: 1,574
Likes: 1
From: Phoenix
And remember to disconnect the battery for 10 minutes after any sensor change to clear the bad learned tables out of the PCM. It will then default back to a stock tune. It can then sense any new errors with the assumption that all sensors are operating correctly - which is what we do, right? So you might be reading old error codes. And now that the one sensor is OK, you might be reading another problem that was masked by the first one.
