Question about Toyota Camry

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Hi. my friend has a '99 toyota camry with the 2.2l 4cyl. he came to me with a ck eng. light on. he had a print out from a shop saying there were 3 codes. two were for 02 bnk1 snsr1, another was for the egr. i have a snap-on mt2500 for my personal chevy vehicles. i scanned his car with obd2 generic and saw the o2 not moving at all sitting around 0.640v. someone must have changed the sensor because it looks brand new. i'm not sure about the egr, i don't have the print he gave me. also when i was in data on the mt2500 the engine load was at 27.2% at idle. i was able to clear his codes and shut off the light but i'll bet it will be back on tomorrow! can you help me help someone else? ha. i appreciate any help and i'm sure he does also!

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  • nsane420 Jun 10, 2009

    do you know where is the egr located on this vehicle?



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If you have sorted out that the oxygen sensor is correct the EGR may need a little cleaning.  You may run some sea foam via the pcv valve to help clean the EGR.
Removal of EGR may be difficult since it has different components.
Below is the closest one that I could find similar to a Toyota.  You may find the components almost at the same place as found in the link below.

Below is a picture of a Toyota EGR valve.  I believe this will be the same one you will find in the engine you are working on.  You might be focusing on this one as this valve may be defective.
EGR Valve


Below is a link which may help you out.

Posted on Jun 10, 2009

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The EGR code is the one that is most likely causing the problem, drive it until you can get the code stored again and then check that, also check to see if the EGR is getting hot ant idle,(leaking valve) and does it want to stall the engine if you open the valve up at idle (checks passages), the common problems are blocked EGR passages and sticky valve pintile that doesn't seal, a leaking EGR will set O2 codes as it makes the engine lean, let me know what u find.

Posted on Jun 03, 2009


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