2004 Higlander catalytic converter wont reset to pass CA. Smog. No code available

40

Asked by Charliecoy Jun 28, 2016 at 11:19 PM about the 2004 Toyota Highlander FWD

Question type: Maintenance & Repair

I already drove my 2004 Highlander for more than 600
miles to reset the cat after I had the oxygen sensor
replaced with P2238 code. I got 2 days left in June 2016
to pass the smog. After that, I will have to get 3days
moving pass from DMV to continue driving it around until
cat reset. It's already a whole month drive cycle project
for me. Do I really have to replace the Cat? I'm getting
desperate. I returned so many times to Smog place and
mechanic who replaced the oxygen sensor. Both of them
keep on saying Drive more! I also ordered my own code
reader from Amazon. I'll appreciate any help. Thanks!

3 Answers

41,815

Don't drive more there clueless your DTC code is about the 02 sensor not functioning you can drive for ever and it will NOT self heal! First, make sure the HEGO(S) FUNCTIONING CHECK IT for an AC square wave output or read live time date on STFT and LTFT these are fuel trims. If its fast and functional clear the PCM of KAM (keep alive memory) drive the vehicle a few miles and read DTCS again if any. I know California won't allow auto store to read codes due to State legislation. GOOD, thing you purchased a reader.

1 people found this helpful.
40

Thanks Mark, I gave up after doing another Toyota drive cycle today. I dropped it back to the car shop (not a dealer) who replaced the o2 sensor. We'll see what he'll say. I'll post another update after. I guess I will have to go DMV to get a 3 days extention permit.

40

Update: I finally passed the CA smog today. It turned out my 2004 Highlander with 185k miles really have a bad CAT. It was a Bad, bad decision I made to keep on returning to that 1st repair shop. Nothing was done for week in a shop even when I gave them a list of things to replace or check (sparkplugs, wires, back 02 sensor, trans fluid, vaccum leak,STFT/LTFT check) I dont know anything about cars. All of these things to check are from internet & youtube. I guess, its a lessons learned. IF your car problem is related to emmissions, bring your car to Repair shop that also do SMOG Test. After $2,100 with NEW Cat, 2 02 sensors,sparkplugs & trans fluid & readiness test drive,I finally got my sticker!

4 people found this helpful.

Your Answer:

Highlander

Looking for a Used Highlander in your area?

CarGurus has 816 nationwide Highlander listings starting at $7,498.

Postal Code:

CarGurus Experts

  • #1
    Wendy Tucker
    Reputation
    6,430
  • #2
    Stillsearching
    Reputation
    3,660
  • #3
    SIdd
    Reputation
    3,080
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Honda Pilot
42 Great Deals out of 913 listings starting at $1,230
Used Toyota 4Runner
26 Great Deals out of 542 listings starting at $9,999
Used Toyota RAV4
124 Great Deals out of 3,046 listings starting at $4,999
Used Lexus RX
46 Great Deals out of 1,219 listings starting at $4,995
Used Toyota Camry
46 Great Deals out of 1,149 listings starting at $2,500
Used Toyota Sienna
47 Great Deals out of 631 listings starting at $2,499
Used Honda CR-V
183 Great Deals out of 4,989 listings starting at $440
Used Acura MDX
40 Great Deals out of 898 listings starting at $5,999
Used Toyota Tacoma
44 Great Deals out of 742 listings starting at $9,975
Used Toyota Sequoia
3 Great Deals out of 56 listings starting at $19,990
Used Ford Explorer
63 Great Deals out of 2,041 listings starting at $6,990
Used Toyota Tundra
33 Great Deals out of 984 listings starting at $10,698
Used Nissan Pathfinder
35 Great Deals out of 1,731 listings starting at $285

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. Content will be removed if CarGurus becomes aware that it violates our policies.