I found An "L" shaped rubber cap with a sponge inside on my garage floor. Since then my check eng. light has been on. Bought a new gas cap as per Auto Zone Tec. I think the error code is related to th

10

Asked by Feb 19, 2017 at 02:33 PM about the 2000 Lexus RX 300 AWD

Question type: Maintenance & Repair

I think the P0400 error code is related to the "L" shaped rubber cap I found on the garage floor. I can't figure out where it goes. Changing the gas cap had no effect.

3 Answers

75,365

That trouble code is for the EGR system. Nothing to do with the gas cap. Possibly a clogged or malfunctioning EGR valve. HTH. - Jim

10

This is what I found on my garage floor. It had a sponge inside. I think it might be related to the Check engine light. I can't figure out where it goes or what it is.

1 of 1 people found this helpful.
75,365

Hmmmmmmm, not exactly sure what that is. But I did some more reading on your Lexus and it seems that you don't have an EGR (Exhaust Gas Recirculation) valve. So now I'm puzzled about what that code means on your vehicle. I'll have to do some more digging! -Jim

Your Answer

RX 300

Looking for a Used RX 300 in your area?

CarGurus has 856 nationwide RX 300 listings starting at $1,600.

ZIP:

Lexus RX 300 Experts

  • #1
    Rx300_21001
    Reputation
    1,960
  • #2
    John Orlando
    Reputation
    1,050
  • #3
    mrsvirtuous
    Reputation
    700
View All

Related Models For Sale

Used Toyota Highlander
552 Great Deals out of 43,116 listings starting at $2,009
Used Toyota RAV4
676 Great Deals out of 63,266 listings starting at $1,995
Used Acura MDX
460 Great Deals out of 13,328 listings starting at $795
Used Honda CR-V
784 Great Deals out of 63,568 listings starting at $1,495
Used Lexus ES 300
10 Great Deals out of 821 listings starting at $1,500
Used Toyota 4Runner
349 Great Deals out of 29,856 listings starting at $1,500
Used Toyota Camry
1,104 Great Deals out of 78,328 listings starting at $1,100

Used Cars For Sale

2003 Lexus RX 300 AWD For Sale
83 listings starting at $2,500
2002 Lexus RX 300 AWD For Sale
3 Great Deals out of 139 listings starting at $3,243
2001 Lexus RX 300 AWD For Sale
3 Great Deals out of 129 listings starting at $1,600
2000 Lexus RX 300 AWD For Sale
3 Great Deals out of 148 listings starting at $2,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.