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Well, I don't have p0171 any longer. Driven for 150 miles. Car drives smooth. Mpg is 45mpg 2-3mpg better after I replaced CAT. Valve cover gasket...
Driven 120 miles after I took it to mechanic. No p0171 and mpg is 45mpg. The mechanic who did the smoke test also had said he had to tighten the...
Thanks for listing the possible reasons I don't know what scan tool was used. I asked for all scan data and they declined. I may still have a bit...
So did replacing fuel pump solve p0171 permanently?
Your p0171 got resolved ? I have a similar story. Replaced CAT with Walker and also downstream O2 sensor Denso. Now I get p0171. No major vacuum...
Took the car to auto repair to do the diagnostics. They did a smoke test. He says there is no leak except he saw smoke near the valve cover...
I was interested as well. I am getting p0171...and can't tell what's wrong
No exhaust leaks were seen. CAT has been welded properly. Maybe next I need to check for vacuum leak or replace upstream O2 sensor.
Cleaned MAF sensor. Reset code by disconnecting battery. After 40 miles, got p0171 Replaced MAF sensor with new Denso Sensor . Reset code by...
Today Today was the 2nd attempt at cleaning. This time I made sure MAF wire that's inside is sprayed adequately as well as the amber bulb. Left...
That's on my list to check. First I will replace MAF sensor and see if that resolved this p0171. Just 100 miles ago I replaced the CAT and...
Thanks. Cleaned MAF sensor second time esp MAF wire that's inside and the amber bulb. Reset code by unplugging battery. Will drive and see if...
Where is this temperature sensor bulb? Why has that to do anything with p0171? I cleaned the MAF and replaced air filter. I am getting p0171 now....
I am getting p0171 the last 100 miles . I am suspecting the same. In my current tank of gas as I had added duralube catalytic converter cleaner....
Just had not reset codes by unplugging the battery after cleaning the MAF sensor. So CE light on. And after cleaning MAF because I had not done an...
Any thoughts here ? See the last post https://priuschat.com/threads/replacing-catalytic-converter-as-preventative-safety-measure.203331/#post-3374547
Drove 25 miles. CE light back on P0171 P0113 P0103 All point to MAF sensor. I guess cleaning MAF reset the code but only for 25 miles. Now codes...
Wow after cleaning MAF sensor, new air filter, new walker CAT I am getting close to 49 mpg in the 20 miles I drove today. It was down to 40mpg...
Anybody sold your old cat to RRCats? They are giving me a quote of $550 for the 2cats in my 2007 Prius. But they will issue payment only after...
Had bad MAF sensor. Cleaned it and put it back on. Everything is looking good. Since I had CE light originally for p0420 I had not bothered to...
