In a scan software graph, Bank 2, 1 O2 pulses 3 times for one Pulse of bank 1, 1 which takes 8 seconds

Tiny
PCMENTOR29
  • MEMBER
  • 1996 TOYOTA AVALON
  • 160,000 MILES
Could I have gotten the wrong Bank 2, 1 o2 sensor when it was replaced recently? Is the bank 1, 1 o2 about to fail. No codes exist. Has anyone dealt with this issue? It has only one sensor for the bank 1, 2 and it sortof follows the Bank 1, 1 graph. Thanks
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Tuesday, June 19th, 2012 AT 11:23 AM

11 Replies

Tiny
DOCFIXIT
  • EXPERT
Have codes in P0xxx format?
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Tuesday, June 19th, 2012 AT 7:43 PM
Tiny
WRENCHTECH
  • EXPERT
How would you even know that? Your code read can't display at the actual switching speed. It would have to be graphed out with a professional scan tool.
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Tuesday, June 19th, 2012 AT 8:05 PM
Tiny
PCMENTOR29
  • MEMBER
Hi, Sorry for not being more clear. I am using Pcmscan, a software on my laptop along with a ELM tool that plugs in to the DLC connector. The car is a 1996 Toyota Avalon V6.
I graphed over 1 minute all PID's my car uses. The O2 bank 1 Sensor 1 has one cycle(peak) in 8 seconds. The O2 bank 2 sensor 1 has three cycles(peaks) in 8 seconds. I can set the software to see only these two PID's when recording. I will do this asap.I was just hoping someone could help me understand this. Thanks.
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Wednesday, June 20th, 2012 AT 2:31 AM
Tiny
WRENCHTECH
  • EXPERT
It's not really that slow. I don't think the software is updating quickly enough.
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Wednesday, June 20th, 2012 AT 2:35 AM
Tiny
PCMENTOR29
  • MEMBER
Thanks WrenchTech. I will scan with just 2 pids. I just discovered the O2 I had put in was the wrong part number 13354 Bosch. Tomorrow I will get the right part 13355 Bosch and put in. And then scan. Attached is the Graph of the problem I had before the change. Thanks.
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Wednesday, June 20th, 2012 AT 3:59 AM
Tiny
PCMENTOR29
  • MEMBER
Hi, here's a graph where the two sensors, Bank 1, 1 and Bank 2, 1 are almost pulsing the same for about 5 seconds. Using only two PID's when scanned.
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Wednesday, June 20th, 2012 AT 7:14 AM
Tiny
WRENCHTECH
  • EXPERT
Why is this even an issue. Is it setting any codes?
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Wednesday, June 20th, 2012 AT 9:43 AM
Tiny
PCMENTOR29
  • MEMBER
Quote:Why is this even an issue. Is it setting any codes?
No codes are setting. I noticed the LTFT for Bank 2 Sensor 1 was at +12% and was wanting to lower it. I am afraid it will cause the O2 to fail like the one I replaced. Thanks
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Wednesday, June 20th, 2012 AT 12:49 PM
Tiny
PCMENTOR29
  • MEMBER
I had gotten the wrong O2 sensor from Autozone installed. The difference was the length of the wires. So I switched it. I plan to attack the +12% Long term fuel trim next week actually. A few months late.
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Thursday, November 22nd, 2012 AT 1:33 PM
Tiny
WRENCHTECH
  • EXPERT
That is not going to cause the 0/2 to fail. All that is telling you is that the engine has a slight lean condition and the computer has compensated for it.
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Thursday, November 22nd, 2012 AT 1:39 PM
Tiny
PCMENTOR29
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Thankyou, that's a relief.
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Thursday, November 22nd, 2012 AT 1:54 PM

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