Diagnostic Reading HELP: Code P2238 on 2004 Camry 4cyl - Toyota Nation Forum : Toyota Car and Truck Forums

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post #1 of 11 Old 08-20-2008, 07:59 PM Thread Starter
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Diagnostic Reading HELP: Code P2238 on 2004 Camry 4cyl

My brother's 04 Camry just had a readout of Code P2238. His car has roughly 105,000 miles on it. A quick search in this forum gives a single mention of the code, but with no definite answer. Can anyone please help provide more answers as to what Code P2238 is and how to fix it? Thanks.

I replaced my 4-cyl with another 4-cyl, equally powered, but faster ride...

http://i234.photobucket.com/albums/e...e/P9231851.jpg
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post #2 of 11 Old 08-20-2008, 09:22 PM
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where did u get the readout from? autozone usually does free diagnostic and code interpretation.
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post #3 of 11 Old 08-20-2008, 09:37 PM
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Diagnostic procedures are in the Service Manuals.

His GEN5 is probably similar to your GEN6 so you could look in yours.
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post #4 of 11 Old 08-20-2008, 10:34 PM Thread Starter
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Originally Posted by skyxliner View Post
where did u get the readout from? autozone usually does free diagnostic and code interpretation.
He got it from an OBD reader purchased at Kragen or Autozone, I believe.


Diagnostic procedures are in the Service Manuals. Njerald, by Service Manual, are you referring to the Haynes Manual? If you are, we don't have that.

If anyone else has had this problem on their Gen 5, please share your experience. Thanks!

I replaced my 4-cyl with another 4-cyl, equally powered, but faster ride...

http://i234.photobucket.com/albums/e...e/P9231851.jpg
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post #5 of 11 Old 08-20-2008, 10:41 PM
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Quote:
Originally Posted by MCeatalot View Post
He got it from an OBD reader purchased at Kragen or Autozone, I believe.


Diagnostic procedures are in the Service Manuals. Njerald, by Service Manual, are you referring to the Haynes Manual? If you are, we don't have that.

If anyone else has had this problem on their Gen 5, please share your experience. Thanks!
Toyota Service Manual.

You've been a member for over a year and haven't downloaded it?

Try the sticky area........
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post #6 of 11 Old 08-20-2008, 11:08 PM
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Check out the bottom of this page. Most often with this code your problem is going to be the AF sensor.


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post #7 of 11 Old 08-21-2008, 10:37 AM
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O2 Sensor Positive Current Control Circuit Low

Sam

2004 Toyota Camry LE
1999 Honda Accord LX
1992 Subaru Loyale
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post #8 of 11 Old 08-21-2008, 12:50 PM Thread Starter
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Originally Posted by njerald View Post
Toyota Service Manual.

You've been a member for over a year and haven't downloaded it?

Try the sticky area........
Oh haha! Guilty as charged. I've never bothered downloading that. Thanks for the heads up!

My brother and I finally figured out that it's the A/F sensor. Thanks!

I replaced my 4-cyl with another 4-cyl, equally powered, but faster ride...

http://i234.photobucket.com/albums/e...e/P9231851.jpg
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post #9 of 11 Old 03-18-2010, 11:29 AM
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i got the same read out just now,how much did it cost and where did you buy it?

need help with this, please help
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post #10 of 11 Old 03-18-2010, 02:37 PM
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oxygen sensors usually are designed to last up to 100k miles. get the replacement either Denso (factory) or NTK (made by NGK company).

if you want OEM (denso) go to online toyota retailer and look there by part number or go with NGK:
http://www.ngksparkplugs.com/part_fi...uv/default.asp

you can check toyota factory part number here (search for "oxygen sensor"):
http://www.toyodiy.com/parts/

get the NGK model number or OEM part number for your car and look for it on internet stores like rockauto.com or amazon.com
rockauto may carry denso parts cheap. amazon usually stocks ngk mostly at good prices. you may also try ebay, sometimes you can find real deals over there.

most local stores will charge you an arm and leg for A/F sensor.


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Last edited by fenixus; 03-18-2010 at 02:41 PM.
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post #11 of 11 Old 07-07-2016, 09:37 PM
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I have same problem since for more than a year. I have tried different things, like changing the HO2(A/F) still the code coming. I also change the Coolant Temperature Sensor, it improved the A/F ratio, since I had a lot of cylinder knocking. I still running under this code, with minor issues. I know Toyota has issue a Technical Bulletin EG032-04 M.I.L. ON" DTC P0031 AND/OR P2238, regarding this problem. They just Change the HO2 sensor type and re-program the sensor calibration in the ECU. They also install a new hood label to document the change. I went to the dealer they will not do it for my 2004 Camry LE 2AZFE since it has pass warranty terms. That will be billed to me. So I decided to wait. I have done all testing, monitoring and inspection, all voltages are between 0.5 and 4.5V, no open, no grounded or no short circuit in the sensor, Heater resistor between 1.8-3.4ohms, voltages from ECU inputs open collectors are under specifications 3V and 3.3V…cables and plugs between ECU and HO2 are ok….Fuse A/F HTR is OK…HTR Relay not for this model….

Regarding to the link njerald posted....I am looking for Service Manual on a PDF files for my 2001 Toyota Corolla without luck. Any help will be appreciated.
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