Question about 2002 Toyota MR2 Spyder
Check engine light was on and dealer diagnosed the problem as needing to replace all 3 oxygen sensors. I replaced all 3 sensors and now I am getting p0172 and p0175 codes. LTFT for both banks was at -42%. I reset the codes and also disconnected the battery to reset the LTFT to 0%. Drove the car about 30 miles and the MIL light came on again showing the same 2 codes. If I was sold the wrong oxygen sensors could that cause this problem?
Posted by Anonymous on
Peter. The dealer did diagnose the problem. They said the car needed all 3 oxygen sensors replaced. They were replaced and the car is now returning codes p0172 and p0175 which are the only 2 codes coming up when the check engine light came on. My question is if the dealer sold me the incorrect oxygen sensors could this cause the computer to incorrectly set the p0172 and p0175 rich fuel mixture codes. There are no other codes coming up. My plan at this point is to check and clean the MAF, check my fuel pressure, and also the TPS but I did not want to waste my time if it could possibly be that the new oxygen sensors where the problem. Any help would be appreciated.
Posted on Jan 23, 2013
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Posted on Jan 02, 2017
What your asking, is how to make a malfunction light
go away from your dash, so you can forget you have a
problem & make no attempt to repair the car
Until you find & resolve active OBD2 Codes that actually set
a MIL or Check Lamp it will keep coming back
Every time you clear a code you have to run a drive cylce in
some cases to start the procees over, as you need those codes
to diagnose the issues
The codes that are there, do not tell you what to replace
Without writing a book here, just study OBD Systems online &
take the car to a repair shop
It is beyond your ability at this time to figure out
Posted on Sep 22, 2011
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