Permanent DTC
12-12-17, 10:09 AM
#5
Intermediate
I remember that code from my other vehicle Toyota Sienna. P0171 & P0174.
Those are system vacuum leak.
Mine was from air cleaner box. I had them removed to change filter and I guess I forgot to tighten the hose.
If P0171 & P0174 are both stored, the chance will be an air intake leak.
Those are system vacuum leak.
Mine was from air cleaner box. I had them removed to change filter and I guess I forgot to tighten the hose.
If P0171 & P0174 are both stored, the chance will be an air intake leak.
12-12-17, 10:34 AM
#6
I remember that code from my other vehicle Toyota Sienna. P0171 & P0174.
Those are system vacuum leak.
Mine was from air cleaner box. I had them removed to change filter and I guess I forgot to tighten the hose.
If P0171 & P0174 are both stored, the chance will be an air intake leak.
Those are system vacuum leak.
Mine was from air cleaner box. I had them removed to change filter and I guess I forgot to tighten the hose.
If P0171 & P0174 are both stored, the chance will be an air intake leak.
12-12-17, 02:50 PM
#7
My Scangauge will say that they are cleared but the history of them is still in the ECU unless I erase them with Techstream.
What software are you using?
Question is...If you don't have a CEL, why does it matter if it's stored in your ECU? Those are stored in there for future reference in case it's a recurring problem and there's a history to help mechanics trouble shoot. It doesn't mean you have the problem now.
Like Fight Club The first rule of Techstream is we don't talk about Techstream
Last edited by harper7; 12-12-17 at 03:02 PM.
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12-12-17, 05:37 PM
#8
I have Toyota's Techstream software that will clear/erase them. But Why?
My Scangauge will say that they are cleared but the history of them is still in the ECU unless I erase them with Techstream.
What software are you using?
Question is...If you don't have a CEL, why does it matter if it's stored in your ECU? Those are stored in there for future reference in case it's a recurring problem and there's a history to help mechanics trouble shoot. It doesn't mean you have the problem now.
Like Fight Club The first rule of Techstream is we don't talk about Techstream
My Scangauge will say that they are cleared but the history of them is still in the ECU unless I erase them with Techstream.
What software are you using?
Question is...If you don't have a CEL, why does it matter if it's stored in your ECU? Those are stored in there for future reference in case it's a recurring problem and there's a history to help mechanics trouble shoot. It doesn't mean you have the problem now.
Like Fight Club The first rule of Techstream is we don't talk about Techstream
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