hatchnu

Check engine light came on about a month ago so I had it read at local garage (Codes: P2243, P0134). He said the failure is the front oxygen sensor that may have a failed heat coil. I don't have a lot of free cash at the moment so I don't want to unnecessarily replace any parts. Dealer quoted $400 which sounds crazy. Just wondering if anyone knows if this oxygen sensor needs to be replaced or not? I haven't noticed a change in gas mileage. There may actually be an increase in gas mileage.

Also, if i need to replace the sensor is this something I can do myself without a lift? Which oxygen sensor do I need to buy?

I live in Alabama so emissions isn't a problem.

Mileage: 61k
Year: 04

Thanks for your help!

01tl4tl

Have a quick talk with the dealer service MANAGER
Many emission parts are covered to 80k miles- even if no smog test in your state- its a federal issue
If not- check azine vendor-dealers for good price on OE part
It may be running lean causing better mileage and engine havoc

hatchnu

Which oxygen sensor do I need to get?

mtpro12

I have the same issue with the exact codes. Its the rear sensor ontop, near the fire wall on the passenger side

JERRY_G

i got a 2004 acura tl code P0134 bank 2 just need to know where its located so i can change it.

thnx

al.c

This just happened to me too, brought it in to a shop and they told me that I should just bring it back to the dealer for them and it should hpbe covered due to state emission rules. I'll keep my fingers crossed. Anyone knoe if its hard to change by myself?

YeuEmMaiMai

they are not really hard to change just takea some anti seize and you can change it out easily with a proper socket

jamesallanthomas

I have a 2004 TL and I am wanting to change out my oxygen sensors. Can someone shine some light on which ones are where? I see all these Bank 1 and 2 and Sensor 1 and 2 along with upstream post cat, upstream pre cat and so on. What does it all mean? I know there is one right by the radiator and one on the back of the engine. which ones are those called? where are the other two located? I would appreciate any info available

Dandroz240

One thing I found out about changing the O2 sensors to a BOSCH brand, the new sensors have a larger element shroud on them. When you compare the stock to a new one, you will not see exact match. Just pay attention to cable length and pinouts. This was on an 08 TL with a P0134 code.

bla8291

Go to a Japanese shop and have the sensor changed out. Make sure they don't put a Bosch brand sensor in. They'll charge you $200-250 for the job. The service manual says to diagnose the P2243 code first if both codes show up at the same time, and diagnosing that code, if I remember correctly, is checking the sensor itself to see if it is even working, or working within spec. If it is indeed the sensor that has gone bad, the other code will clear when the 2243 code clears.

techguy

My 04 TL just started to show code 2243, one code only. I reset it yesterday to see if it will come back which it did this afternoon. Can you please help me determine which O2 sensor to replace. Do I need special tools or do I need to send it to the shop.

techguy

The light disappeared yesterday after filling gas but the reappeared this afternoon while heading home from work. Same code. Anyone can give guidance in replacing the sensor, I believe it is by the firewall which is a bit hard to get to. Do you have to remove other parts to a socket on it? Would a sensor socket work or do I need some other special tool.

SurfingScotty

My HUD give me a code P0134 yesterday. The night before, I put some Lucas Fuel Injector cleaner into the tank. I've never thrown a code before with injector cleaners. Any thoughts if doing so could throw a code? I plan to run the tank dry and fill up to see if the check engine light goes out. The car is running per usual.

thoiboi

Very very possible that it's throwing a false positive. clear it and run regular gas and see if it comes back.


also you have an heads up display on your TL?!?!

SurfingScotty

Okay, you got me. Should have said "my navi".

How do you clear the code?

thoiboi

1 pull the clock fuse, 2 disconnect battery for a bit, 3 go to a parts store and have them plug in an OBD II scanner to read and clear.


4. buy a cheap OBD scanner and do it yourself

SurfingScotty

Didn't know it was that easy! ("Thanks" left).

lauraashleyf

2006 Acura TL (3.2); Automatic; No Sports Package
I had some car trouble, when I pressed the gas, my car would barely move. I took it to Auto Zone, here are the codes that showed up:
P0134 – HO2S (B1) S1 Heather System Malfunction (No Activity)
P2251 A/F Sensor S1 V?r Circuit High Voltage
P2138 APP Sensor A/B (TP Sensor D/E) Incorrect Voltage Correlation
P0134 HO2S (B1) S1 Heater System Malfunction (No Activity)

Code P0134 indicates that the Bank 1, Sensor 1 O2 electrical circuit had no activity for a predetermined period of time.
Auto Zone advised the part replacement is their Part # 13965 – Bosch. This is a front, upstream sensor (located before catalytic converter).
I called my local Acura dealership to see what the price difference is – if it’s minimal difference, I’ll usually pay for the dealership part. I am a woman, maybe that’s silly! I know nothing about my cars and my dad does any minor work to my car.
The Acura Service Department said that they would need to complete their own diagnostics test, while the car is running. They asked if Auto Zone did the diagnostics test while the car is running – no they did not? It was parked. They can’t get me in until Monday/Tuesday but my dad thinks he can replace the part – thank you online forums! Every time I go to the dealership, there’s always surprise parts I need so I feel like that’s why the service department wants to complete their own diagnostics test… However…
I then spoke to the Acura Parts Department and told them exactly the information from the Auto Zone print out – gave the P0134 code; the man seemed unsure. I told her it says Bank 1, Sensor 1. He quoted me a different part. The Parts representative confirmed with the Service representative for Bank 1, Sensor 1, that is the part however it’s a rear part. Auto Zone says this is a front part. It’s a $200 part for the front and $130 for the rear. My dad says since it’s electrical, you cannot return it so I want to make sure I get the correct part.
Does anyone have any input?
1. If a P0134 code reads for Auto Zone, shouldn’t the Acura dealership come up with the same code? The codes are uniform to the vehicle, correct?
2. Does anyone know if this is a front or a rear part?

thoiboi

Hey Laura,
Tried to PM you back but your mailbox is full so here:


First and foremost, stay away from AutoZone's Bosch units. Stick with OEM for o2 sensors and other emissions related things.

P0134 and P2251: read here: https://acurazine.com/forums/problem...-p2251-811823/

looks to be rear upstream.

Looking up P2138 and it's a fairly common issue with our TLs. You have to buy a new APP Sensor and replace it. https://acurazine.com/forums/problem...riving-726039/


There's a lot of great information on these forums welcome!

lauraashleyf

You are absolutely wonderful, thank you so much for this information! I feel rather silly since I've been researching this for a couple hours. I feel much better now. Seems like I ordered the right part.

triax37

iTrader: (1)

Hey, that's my DIY linked above!

Laura - I didn't do a good job of describing the sensor location for P0134 and P2251, but it's behind the engine on the passenger side. Said differently, it's between your front seat passenger and the engine. If you open the hood and lean over on the front passenger side, you'll see it - the wires will be pointing towards the sky, with the O2 sensor pointed towards the ground. All you do is remove the harnesses, unscrew it, screw the new sensor in, and replug in the harnesses. Let me know if you have any questions.

Your acceleration problem is tied more to the P2138 code and sensor. The O2 sensor linked to P0134 and P2251 is still important, and not replacing that part could lead to an expensive catalytic converter repair in the future, but it's probably not affecting your ability to drive the car this weekend.

Good luck and welcome!

Robert AndLinda Courtney

triax37 thanks for the info. I had ordered a new 02 sensor, installed in the front like autozone showed, yet light came right back on. After finding the thread and your info with pics, i swapped it to the rear and , no more light and all seems good. thanks from a nubie to this site.

lauraashleyf

Okay so the plot thickens...

I called the Acura dealership, parts department. Explained the codes I received - the guy had no clue so he asked the service department. They advised me I needed an oxygen sensor for the rear. They ordered the part, retails for $201, he sold it to me for $150; got an o-ring and Acura power steering fluid as well. My dad replaces the oxygen sensor, the o ring & tops off the power steering fluid. The car works like a champ for a week! Now I'm back to square one.

I believe Acura sold me the rear part but should have sold me the front part for the oxygen sensor. I'd hate to spend another $200 on another oxygen sensor if it's not necessary. The check engine light went away; I took it to Auto Zone for another diagnostics test and they advised no codes were showing. I called Acura for a diagnostics test, they want $100 just for the diagnostics test.

Someone posted I need to replace an APP sensor.

Looking up P2138 and it's a fairly common issue with our TLs. You have to buy a new APP Sensor and replace it. Acceleration Failure while Driving

I was under the impression the oxygen sensor I replaced would fix all four error codes, per Auto Zone. Should I also be replacing other things as well?

My original codes:
2006 Acura TL (3.2); Automatic; No Sports Package
I had some car trouble, when I pressed the gas, my car would barely move. I took it to Auto Zone, here are the codes that showed up:
P0134 – HO2S (B1) S1 Heather System Malfunction (No Activity)
P2251 A/F Sensor S1 V?r Circuit High Voltage
P2138 APP Sensor A/B (TP Sensor D/E) Incorrect Voltage Correlation
P0134 HO2S (B1) S1 Heater System Malfunction (No Activity)

I replaced oxygen sensor (rear), per Acura dealership receipt description: 36531-RCA-A02 : Sensor $201.73/sold for $152.00.

lauraashleyf

You swapped the oxygen sensor from the rear to the front? It's interchangeable? I thought they were two different sensors.

lauraashleyf

Okay so the plot thickens...

**I did print the article you referenced and I'm going to go through it in detail tonight.

I called the Acura dealership, parts department. Explained the codes I received - the guy had no clue so he asked the service department. They advised me I needed an oxygen sensor for the REAR. They ordered the part, retails for $201, he sold it to me for $150; got an o-ring and Acura power steering fluid as well. My dad replaces the oxygen sensor, the o ring & tops off the power steering fluid. The car works like a champ for a week! Now I'm back to square one.

I believe Acura sold me the rear part but should have sold me the FRONT part for the oxygen sensor. I'd hate to spend another $200 on another oxygen sensor if it's not necessary. The check engine light went away; I took it to Auto Zone for another diagnostics test and they advised no codes were showing. I called Acura for a diagnostics test, they want $100 just for the diagnostics test.

Someone posted I need to replace an APP sensor.

Looking up P2138 and it's a fairly common issue with our TLs. You have to buy a new APP Sensor and replace it. Acceleration Failure while Driving

I was under the impression the oxygen sensor I replaced would fix all four error codes, per Auto Zone, including the APP sensor. Should I also be replacing other things as well? Such as the APP sensor... I did a search for this and couldn't find it. I'm such a girl!

My original codes:
2006 Acura TL (3.2); Automatic; No Sports Package
I had some car trouble, when I pressed the gas, my car would barely move. I took it to Auto Zone, here are the codes that showed up:
P0134 – HO2S (B1) S1 Heather System Malfunction (No Activity)
P2251 A/F Sensor S1 V?r Circuit High Voltage
P2138 APP Sensor A/B (TP Sensor D/E) Incorrect Voltage Correlation
P0134 HO2S (B1) S1 Heater System Malfunction (No Activity)

I replaced oxygen sensor (rear), per Acura dealership receipt description: 36531-RCA-A02 : Sensor $201.73/sold for $152.00.

thoiboi

You don't need to post more than once, it makes things confusing and hard to read.





you gotta replace the APP sensor to fix the APP sensor issue.

lauraashleyf

I apologize for posting more than once, I only joined this site because I know nothing about cars and I was hoping to get more information on here about all the car issues I've been having, so I'm still new and not sure when to press reply, reply all or quote!

Okay so I replaced the REAR oxygen sensor but not the APP sensor. I still think Acura should have sold me the FRONT oxygen sensor but I can try the APP sensor first and see if that helps. Thank you!

I guess if the APP sensor doesn't fix it then I may re-visit replacing the FRONT oxygen sensor next...

guitarplayer16

iTrader: (8)

The APP sensor is one of the first things I'd replace.

If the new APP sensor doesn't work, I'll offer to take it off you

lauraashleyf

Another $100 sensor... the life of an Acura... well, here's hoping it works!

I'm actually the researcher, my father is the handy man replacing the parts, he's just not going to research it for me! Take it off, guitarplayer! #DamselInDistress

Zona2Mich

Did you every find a DIY edit on this problem?

Thanks