Oxygen senson replaced but still have problems
Oxygen senson replaced but still have problems
I get the codes...P0171 and P0174 Pnd Mod10 System Too Lean.
I replaced the oxygen sensors (2 upstream 2 downstream) with Bosch parts and codes came back.
My next plan of attack will be
Mass Air Flow Sensor.
Am I on the track? PLEASE HELP
I replaced the oxygen sensors (2 upstream 2 downstream) with Bosch parts and codes came back.
My next plan of attack will be
Mass Air Flow Sensor.
Am I on the track? PLEASE HELP
Last edited by Jim6869; 04-23-2017 at 09:50 AM. Reason: more detail
Re: Oxygen senson replaced but still have problems
An earlier post (ie the 0ne that refers to 2,200 dollars to replace OX sensors had similar concerns. As have I as well. I was told that I needed to complete a drive cycle before the engine light will go out. It made some sense to me so I am putting miles on it and hoping to see the light go out..Not sure if this was accurate information or not?
Kevin
Kevin
Join Date: Jun 2009
Location: Fort Worth, Texas
Age: 64
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Re: Oxygen senson replaced but still have problems
As to where to go next, I'd try cleaning the MAF (that is, take it OFF the car and really clean it) and looking for vacuum leaks. I imagine a can of Seafoam would not be a bad idea, either.
Join Date: Jun 2009
Location: Fort Worth, Texas
Age: 64
Posts: 13,450
Received 879 Likes
on
685 Posts
Re: Oxygen senson replaced but still have problems
An earlier post (ie the 0ne that refers to 2,200 dollars to replace OX sensors had similar concerns. As have I as well. I was told that I needed to complete a drive cycle before the engine light will go out. It made some sense to me so I am putting miles on it and hoping to see the light go out..Not sure if this was accurate information or not?
Kevin
Kevin
Re: Oxygen senson replaced but still have problems
An earlier post (ie the 0ne that refers to 2,200 dollars to replace OX sensors had similar concerns. As have I as well. I was told that I needed to complete a drive cycle before the engine light will go out. It made some sense to me so I am putting miles on it and hoping to see the light go out..Not sure if this was accurate information or not?
Kevin
Kevin
You may have to clear the CE light by disconnecting the battery for about ten seconds. Then drive about fifty miles to reset the codes.
PIZZA has it right, Check for vacuum leaks including around the Throttle body.
You can clean the MAF but I find it sometimes needed complete replacement.