Tip & How-To about Chevrolet Impala
How to resolve a DTC , p0171, or p0174 code. This code usually does not appear on your vehicles dash, but rather a "check engine" light will display.
If you have an OBD II reader,( some auto parts centers will allow you to borrow theirs) plug it into your vehicle (usually under the passenger side dash) and pull the code.
This code usually means that your MAF ( mass air flow sensor) is reading the air/fuel mixture and senses a problem or may be dirty.
There are a couple of things you will need to solve this problem.
- You will need a can of mass air flow sensor cleaner, and a screwdriver.
Step one : Depending on which vehicle you have you must locate the MAF.
It is usually inline on the air cleaner intake or air "box".
Step two : Unplug the connector from the MAF, and loosen the hose clamp holding it tight.
Step three : Pull the MAF out and be VERY careful DO NOT drop it !
Step four : Make sure you are in a well ventilated area, and place the MAF gently onto a clean rag or absorbent towel, spray the inside of the MAF that looks like a honey comb, and make sure you DO NOT touch the small sensor wire !
Step five : DO NOT dry off the MAF it will dry quickly, re-assemble and test out your vehicle, we usually hear people tell us they notice a difference right away in the performance of their vehicle.
Posted by lindsay836 on
Sep 03, 2016 | Cars & Trucks
Jul 23, 2017 | 1999 Chevrolet Camaro
System Too Lean (Bank 2)
Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust.
Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.
Dec 17, 2009 | 2002 Ford Windstar Cargo
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