error code P0171

[1stToyota]

Originally Posted by bronsin

Got this error code on my sons 2000 ECHO. Assume there is enogh commonality with the Yaris to make deductions valid. Book says P0171 can be:

air induction system
injector blocked
mass air flow meter
engine coolant sensor
fuel pressure
exhaust leak
opn/short heated oxy sensor bank1 sensor 1
heated oxygen sensorr

Anyone have any experience with this code? Or have any comments on how to evaluate each component listed? Im thinking its easy to check for exhuast leak.

Did one last week (P0171/P0174)...but it was on a Ford Windstar (front valve cover, PCV valve, isolator bolt kit & intake manifold gaskets)

On the 2000 Echo I think I'd start with a quick look at the MAF meter to see if it's dirty.