When the cel P0171 came on I took it to the shop, they cleaned the MAF
sensos they cleared the codes drove it and the CEL came back on with P0171
code then they replaced the MAF cleaded the codes drove it CEL back on. The
car runs great no problems. Shop says its probably not the o2 sensor. Any
one have any idea’s on what keeps causing the CEL to come on with P0171
code?? HELP!
31
Dec
SC400 PO171 code driving me nuts
"Lexussc400" <djad…@sbcglobal.net> wrote in message
news:f936ad4a8286ec4bc681eea1715fa31a@localhost.talkaboutautos.com…
> When the cel P0171 came on I took it to the shop, they cleaned the MAF
> sensos they cleared the codes drove it and the CEL came back on with P0171
> code then they replaced the MAF cleaded the codes drove it CEL back on.
> The
> car runs great no problems. Shop says its probably not the o2 sensor. Any
> one have any idea’s on what keeps causing the CEL to come on with P0171
> code?? HELP!
O2 sensors are the first place to start. (after basic checks of is
everything bolted on and not leaking. I would also check fuel pressure. I
assume you have good fuel in it? And the fuel cap done up properly.
mrcheerful
No leaking of anything they also cleaned the injectors the MAf and then
replaced the MAF. the odbII does not indicate an o2. I will have them
check the fuel pressure and possibly change the filter. Any other
thoughts? Thanks for your help
Check with mechanic they checked the fuel pressure no problem found,
changed filter still gives error po171. The first code was po130 O2 that
was cleared and never came back.
Lexussc400 wrote:
> Check with mechanic they checked the fuel pressure no problem found,
> changed filter still gives error po171. The first code was po130 O2
> that was cleared and never came back.
Hope you aren’t using a K&N air filter – they can contaminate the MAF
sensor.
Is the MAF sensor a Bosch? They had a bad problem with OEM replacements in
late 2004.
http://www.vcertt.org/news/8-04.pdf
This is a difficult code to troubleshoot after the first or second guess at
fixing it.
If the mechanic is willing to keep working on it and not charging you then
let them keep working on it. If not, you can buy your husband one of those
cheap $200 Code Readers. He then can work on it until he is blue in the
face then he will tell you to take it back to the dealer.
If all else fails and you see a repeating pattern that espcially Lexus
Codes mean a magnitude of problems you could always buy something like a
Geo Metro.
I purchased the MAF from lexus
Lexussc400 wrote:
> I purchased the MAF from lexus
Could still be a Bosch sensor, and it could be bad. Just guessing from
here, however.
Areas to look at for this code;
Fuel Line pressure
Injector Blockage
O2 sensor
MAF
Engine Coolant Temp Sensor
-d
"Lexussc400" <djad…@sbcglobal.net> wrote in message
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>I purchased the MAF from lexus
What year sc?
"Lexussc400" <djad…@sbcglobal.net> wrote in message
news:cf888a90775d3f852bc82430b25dab65@localhost.talkaboutautos.com…
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>I purchased the MAF from lexus