Can a coolant leak cause a P0171 lean code?
#1
Can a coolant leak cause a P0171 lean code?
Having troubles isolating the cause of a recurring P0171 lean left bank
code. Noticed a leak in the fill reservoir today.
I know this may be a stretch, but, I'm at my wit's end trying to fix this
code problem.
I've read that a bad oxygen sensor may cause this to pop up. But, don't
the oxygen sensors have their own code if they are malfunctioning?
Thanks for your help.. Ed
code. Noticed a leak in the fill reservoir today.
I know this may be a stretch, but, I'm at my wit's end trying to fix this
code problem.
I've read that a bad oxygen sensor may cause this to pop up. But, don't
the oxygen sensors have their own code if they are malfunctioning?
Thanks for your help.. Ed
#2
I would not think a leaking coolant reservoir would be the cause of a P0171 code.
Remember that a P0171 code is for Bank 1 only so that would narrow down the problem to one side. For that reason I would suggest it is related to a fuel presentation “fuel injectors” , exhaust leak before the catalyst or a problem with the O2 sensor. Yes the O2 sensors can be related to many other issues that key up different codes. If it were me I would add BG44K to your fuel and see what takes place.
Codes are a tool to aid you in determining what has gone wrong they to not tell you what is wrong just what it is not doing correctly.
Remember that a P0171 code is for Bank 1 only so that would narrow down the problem to one side. For that reason I would suggest it is related to a fuel presentation “fuel injectors” , exhaust leak before the catalyst or a problem with the O2 sensor. Yes the O2 sensors can be related to many other issues that key up different codes. If it were me I would add BG44K to your fuel and see what takes place.
Codes are a tool to aid you in determining what has gone wrong they to not tell you what is wrong just what it is not doing correctly.
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edtexas (02-09-2015)
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