Check Engine Light coming on

Asked by Mar 02, 2013 at 05:55 PM about the 2002 Porsche Boxster

Question type: Maintenance & Repair

My check engine light keeps coming on.  The codes say that the only thing wrong is one of the oxygen sensors not quite functioning at par.  I have replaced the mass air sensor, had it subsequently removed and re-inserted and replaced a loose hose.  In each case, the light goes off for a few days and then comes back on.  The engine seems to be running fine.  Any suggestions on what I should do next?

11 Answers

take a look at your gas cap...and replace it as it isn't behaving itself....also when you gas up stop at the first click or you'll bugger up your canister and ALWAYS have comprimizing the CAT to be the order of the day....requires long hard drivin, like up a mountain to burn it with the healthy equipment installed.

6 out of 6 people think this is helpful.

I've seen oxygen sensors fail....and what happens as they get 'gobbled up' by the combustion gasses...leavin a stub...which can still do the job?!...but you haven't been running this NEW sensor long enough for it to be the cause-

5 out of 5 people think this is helpful.

Sure do love the air-cooled design...I assume that yours is still this way, and the racetrack ready nature of the beast is on par with the MINI. what I drive and am anxious to see what it can do...right now--not even the S model is prompting the driver to go faster....go faster-

2 out of 2 people think this is helpful.
19,455

o2 sensor heater may be weak,try a different fuel.if often enough it will bring light on always till reset

4 out of 4 people think this is helpful.
93,595

The CEL is on and the code says that it's the O2 sensor.... How about replacing the bad O2 sensor? You replaced the MAF sensor instead?

1 out of 1 people think this is helpful.
65

I've had a cracked hose that behaved like what you describe

2 out of 2 people think this is helpful.

tenspeed is right. The thing will NOT run right until the O2 sensor is checked and possibly changed-

1 out of 1 people think this is helpful.
90

Try running it hard for a while, burn out the crap ethanol does bad things to allot of things on these cars. Then reset by pulling fuse wait 10 sec. And put back in. It is worth a shot before going through a bunch of diag.

7 out of 7 people think this is helpful.

I bought a special socket for O2 sensors and used it maybe twice. It's like an ordinary deep well, but with a slit going up the side for the wire~ I understand your trepidation...but these can be tested still "in play"--what's it doin' to the air/fuel mix? if it's a wrong mix, this little goodie is to blame-----(amongst many culprits on this car)

1 out of 1 people think this is helpful.
385

Tenspeed is right, why are you mucking around with the Mass Air Fuel snesor when the coe is pointing towards the O2 sensor? How about telling everybody what code you got so we can stop guessing as to what's your problem; and start telling you what the True fix should be. There are Hundreds of codes that can be pulled, and without stating what code you pulled, any answer to your question may have you throwing a bunch of unneeded parts and money to correctly fix your problem.

1 out of 1 people think this is helpful.
185

changed out the air injection valves there are 3 cost $250 for parts

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • check engine light comes on when i drive in the rain Why? 1 answer

    check engine comes on when I drive in the rain why?

    1999 Porsche Boxster Base

    -

    Maintenance & Repair

  • Unknown liquid dripping 4 answers

    So today I thought I could drive my Porsche 98 boxster in the snow with now problem, I didn't even make it off my road finding myself sliding into a bank, I'm going to have to get a new front fende...

    1998 Porsche Boxster Base

    -

    Maintenance & Repair

  • 2006 Water pump failed at 23,000 miles amd Porsche won't help! 4 answers

    I've owned this 2006 Boxster for about 1 1/2 yrs and put less than 2000 miles since I've owned it. I will concede the warranty ran out in June but due to years, not miles. I was driving it last week a...

    2006 Porsche Boxster Base

    -

    Maintenance & Repair

  • IMS 26 answers

    I have a 1998 boxster and was wondering just how important it is to replace the Intermediate Shaft Bearing, I just turned a 100,000 miles and want to keep my baby safe,I have read its only 1-2 perce...

    1998 Porsche Boxster Base

    -

    Maintenance & Repair

  • "Check front side lights" indicator comes on when my lights aren't even turned on 2008 cayenne s 3 answers

    Does anyone know why my check front side lights indicator light comes on when my lights aren't even turned on. It only comes on every other day or so while I am driving. The lights seem to be work...

    2008 Porsche Cayenne S

    -

    Maintenance & Repair

Boxster

Looking for a Used Boxster in your area?

CarGurus has 1,497 nationwide Boxster listings starting at $2,995.

ZIP:

Search Porsche Boxster Questions

Porsche Boxster Experts

#1 Michael Kane
Michael Kane
Reputation 250
#2 Stephen Smith
Stephen Smith
Reputation 240
#3 Andrew Dickens
Andrew Dickens
Reputation 220
View All

Related Models For Sale

Used Porsche 911
118 Great Deals out of 4,601 listings starting at $8,901
Used Chevrolet Corvette
201 Great Deals out of 20,888 listings starting at $4,993
Used BMW Z4
49 Great Deals out of 1,392 listings starting at $3,000
Used Ford Mustang
399 Great Deals out of 44,403 listings starting at $1,000
Used Porsche Cayenne
102 Great Deals out of 5,780 listings starting at $3,999
Used Mercedes-Benz SLK-Class
70 Great Deals out of 1,458 listings starting at $3,250
Used BMW 3 Series
1,468 Great Deals out of 38,438 listings starting at $1,700
Used Mazda MX-5 Miata
63 Great Deals out of 4,843 listings starting at $2,500
Used Chevrolet Camaro
310 Great Deals out of 38,867 listings starting at $1,250
Used Mercedes-Benz SL-Class
86 Great Deals out of 3,324 listings starting at $2,988
Used BMW M3
67 Great Deals out of 1,922 listings starting at $4,350
Used Audi TT
54 Great Deals out of 1,316 listings starting at $3,400

Used Cars For Sale

2016 Porsche Boxster For Sale
3 Great Deals out of 78 listings starting at $49,995
2015 Porsche Boxster For Sale
3 Great Deals out of 99 listings starting at $42,900
2014 Porsche Boxster For Sale
12 Great Deals out of 192 listings starting at $36,991
2013 Porsche Boxster For Sale
5 Great Deals out of 126 listings starting at $33,999
2012 Porsche Boxster For Sale
16 listings starting at $26,498