Rich bank 1 code [Archive] - Forum


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06-14-2004, 01:20 PM
OK, I have had this light (rich bank 1) come on every once in a while but then it goes away. When I go to leave in the mornings while the car is still cold, the shift from 1st to second seems bogged down alot but not when its warmed up. Even when its warm the engine seems "jumpy" at around 1500 rpms or so going down the highway. I now for sure my filter is dirty so I'm gonna clean that but maybe it's time for something else to be changed like the cat or even plugs.

Any suggestions, I found a few threads while searching but nothing resolved.

06-15-2004, 03:59 PM
Well, my SES light came on today, went to autozone, and it was PO174, rich bank 1. So I would like to find out what caused this as well. The guy there said its probably the o2 sensor on the back header; but at 65 bucks a shot I want to make sure first.

Mike Jung
06-15-2004, 04:33 PM
One of the first thing I would do is check your air filters; to see if they need a cleaning & re-oiling.

06-15-2004, 08:46 PM
I just did mine last month, but I will check it again.

06-17-2004, 11:58 AM
I cleaned my air filter and it still is making the hesitation going down the highway. I didnt test the shift out though. I went ahead and bought the o2 sensor so I will see if i can get that put on tonight once my engine cools off a little.

06-17-2004, 12:21 PM
Let me know how that o2 sensor works out.

06-18-2004, 11:02 AM
OK, well i just installed the o2 sensor a little while ago. I had the battery disconnected for i dunno maybe 45 minutes or so. Then I took a little ride for like 6 or 7 miles. Well, the light never went off but it certainly feels better. The litte hesitations seem to be gone.

I dunno what an older o2 sensor is supposed to look like but mine was covered in white crud. I guess the only thing to do now is go get the code reset and see if it comes back on or just wait till this one goes off. i trying to think of something else to checkjust in case...

06-18-2004, 12:00 PM

well, i took it out for another ride and the light went off by itself so we will see if it stays off.

06-18-2004, 01:28 PM
Good deal!

Which one did you replace?? The one on the back header?

06-18-2004, 01:31 PM
Usually if the problem is solved, the light will turn itself off. Someone here said after 100 drives...that's not right...or at least according to the GM people I talked to today. Not picking a fight...just letting you guys know I heard drifferent.

Good to know you fixed it for cheap (compared to having a shop or dealer work on it).

06-18-2004, 02:09 PM
Yeah, I replaced the one in the header. It is alot easier if you rent the socket from autozone to get the o2 sensor out. it was like $15 and then they give you your money back when u return it.

09-26-2006, 10:40 AM
What type of socket is it? maybe my GM dealer can "lend" it to me... ;)

09-26-2006, 01:20 PM
^^^^^^^it is actually called an "O2 socket".^^^^^^^^^^

Has a cut down the side so the wire(s) can pass through it