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2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT


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TDoge
New User

Jan 16, 2017, 8:50 PM

Post #1 of 9 (312 views)
2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

The family friend mechanic I've used isn't getting back to me, so I thought I'd see if replacing my 02 sensors is easy enough, and I feel like it is. However, I have some questions. First let me give some vehicle and problem descriptions:

Vehicle: 2000 Toyota Camry 3.0 V6 (California Emissions)
Mileage is a little over 100,000 miles.

Check Engine Light Codes: P1130 (History, Current, Confirmed, Pending); P1135 (History, Current, Confirmed, Pending); P1150 (History, Current, Confirmed)


I was told I need to replace my [Bank 1 Sensor 1] and [Bank 2 Sensor 2]. Let me know if anyone disagrees with that. The person who told me this is a family friend mechanic and has no motive to lie or upsell me, and looked at the engine himself (he just didn't have time to fix the problem).

Question 1: I'm looking to buy the right sensors. What part do I need? I'm looking at a CA emission Upstream Rear and a CA emission Upstream Front sensor at O'Reilly, but I don't know what the difference is.
I was under the impression that I need a sensor that is CA emission, 4-wire, non-universal, and upstream. I don't know enough about engines to know what front or back means pertaining to upstream sensors.

Question 2: Looking at my engine, the [Bank 2 Sensor 1] is really easy to identify and reach. I feel confident that I can work with this. However, the [Bank 1, Sensor 1] is more difficult. I was looking toward the back under the hood and I see a sensor deep down, but I don't think I'll be able to reach it. Is it normal to have to remove other engine parts to be able to get to/reach the [Bank 1 Sensor 1], or am I looking at the wrong sensor? Unfortunately, I don't have pictures. It's at the very rear of the engine/hood space and down quite a ways.

Question 3: Is it necessary to buy an oxygen sensor socket to do this part replacement?

Question 4: I'm a poor college student, and money is scarce. Would it be worth trying to replace just one oxygen sensor and then seeing if my check engine light goes away, or do both sensors definitely need to be replaced? And if so, which sensor would make sense to try replacing first? I was reading in other forums that people with multiple related codes should try changing one thing at a time to see if it affects the other codes.

Any help or advice is appreciated. I'd be happy to clarify or give additional info if it will help.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 17, 2017, 1:42 AM

Post #2 of 9 (304 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

Know that codes don't tell you to replace parts rather the circuit it notices has a problem. Why can be a silly as a vacuum hose, pinched wire or who knows for O2 sensors. Zillion are replaced and are not the problem but the result of a problem.


Yes you should have the proper tools, rented or owned, possible heat (not just a propane torch) and tap to rethread hole if needed which you really wouldn't know till old one is out.


Understood, $$ an obstacle but worse wasting it on things that are NOT the problem. If still driving with an upstream O2 sensor that isn't operating the engine can't run properly and risk or too late for converts(s) as well so the costs go right up and thru the roof.


Worse if reduced to heat to get old ones out that sensor would be junk and could harm pipe and surrounding things if not good at it. If threaded hole is really messed up a new pipe or weld in a new threaded area - above the DIY book of tricks.


I really suggest you get in touch with your mechanic friend to at least help diagnose this. Go in person if need be and put the texts and messages away if no response you need to know why on that end - device problem or ignoring you for a reason either way nice to know,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 17, 2017, 5:15 AM

Post #3 of 9 (298 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

The P1135 is a heater code and chances are very good that it is a bad sensor for that problem.

The other 2 codes are response codes and there is no reason to assume the sensors are the cause. That needs further diagnosis to determine the actual cause of the codes.

The P1135 applies to the upstream sensor on bank one which is the rear bank of the engine.

You could roll the dice on that one and probably be right but the other 2 codes could very possibly be due to another issue in the engine.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



kev2
Veteran
kev2 profile image

Jan 17, 2017, 7:19 AM

Post #4 of 9 (285 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

Address the p1135 first.
p1135 is heater CIRCUIT code , amp >8 or < .25. .
As HT mentioned the sensor is likely bad a heater issue - He also said you confirm before spending. Probe heater wires at sensor.
Toyota is critical as far as the heater resistance specs. often lacking in aftermarket. This is an Air Fuel Ratio sensor- and specific to lala land - suggest you get any needed replacement at TOYOTA.


TDoge
New User

Jan 17, 2017, 11:59 AM

Post #5 of 9 (267 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

@Tom,

Thanks for your input. I'll be mentally prepared if the threading of the hole is all screwed up. I wouldn't have thought of that before.

Regarding the mechanic friend, I don't know him all too well, but he's done good work for me before. He's kind of like a friend of a friend of a friend, so we don't have the tightest bond. Plus, he's a busy guy at his own mechanic job. I assume he's just busy and doesn't feel like doing a side job. Hard to get a hold of, but it's nice to have the discounted resource, even if he only responds 1 out of 5 times.


TDoge
New User

Jan 17, 2017, 12:10 PM

Post #6 of 9 (265 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

@HT and Kev2

I appreciate the advice, guys. From my understanding of your combined responses, I should try and fix this P1135 problem first. This means tinkering with the sensor 1 at Bank 1, which I'm concerned about. Typically, is this sensor easy to reach without having to remove other parts or using a jack?

Also, there was mention of probing the heater wires at the sensor. At the risk of sounding even more green, what is this probe device called, because I doubt I have one lying around in the garage?


TDoge
New User

Jan 17, 2017, 12:14 PM

Post #7 of 9 (261 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

@kev2

In different forum threads I've seen the terms Oxygen Sensor and Air/Fuel Ratio Sensor used. I've tried googling both terms and I'm still left confused. So I have to ask, what's the difference between an oxygen sensor and an A/F ratio sensor?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 17, 2017, 12:14 PM

Post #8 of 9 (258 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

By probing he means identifying the correct wires and reading the resistance of the internal heater with a DVOM.

It sounds like this job is going to be beyond you capabilities. You need a competent mechanic and not the one that told you to change 2 sensors. he doesn't appear to know what he's doing.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



kev2
Veteran
kev2 profile image

Jan 17, 2017, 2:49 PM

Post #9 of 9 (239 views)
Re: 2000 Camry - 1st time 0XYGEN SENSOR REPLACEMENT Sign In

air fuel ratio vs oxygen sensor.... Air fuel sensors are newer and more precise in how the exhaust mixture is reported...they are not interchangeable, the difference in operation is purely academic at this point. Papers are available for reading by googling "oxygen sensor vs air fuel ratio sensor" . As expected the cost of AF ratio is higher.
My Experience is the aftermarket sensors especially with Toyota are not the desired replacement, nice way of saying aftermarket is problematic - does not work well.






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