P0172 sputtering
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2nd Gear
Joined: Feb 2017
Posts: 109
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From: Arkansas
P0172 sputtering
So I have a sputtering issue around 1.5k. It comes and goes.
2012 n18 MCS R56
just recently went two steps colder on plugs.
replaced my MAF sensor because it started idling weird. Everything seemed to be back to normal after replacing the MAF but then I got a p0172 code. Just wondering if anyone else has had this issue. The only problem I see is maybe the injectors?
2012 n18 MCS R56
just recently went two steps colder on plugs.
replaced my MAF sensor because it started idling weird. Everything seemed to be back to normal after replacing the MAF but then I got a p0172 code. Just wondering if anyone else has had this issue. The only problem I see is maybe the injectors?
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Joined: Jul 2016
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From: WNY
Why did you go colder on the plugs?
P0172 is for "Bank 1 System Too Rich". What is the condition of your air filter? How many miles on your engine? What is the condition of the O2 sensor? Did you install the MAF sensor backwards? It is possible you received a bad MAF sensor...
P0172 is for "Bank 1 System Too Rich". What is the condition of your air filter? How many miles on your engine? What is the condition of the O2 sensor? Did you install the MAF sensor backwards? It is possible you received a bad MAF sensor...
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2nd Gear
Joined: Feb 2017
Posts: 109
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From: Arkansas
Air filter is clean. It is oiled. Im switching to a dry filter here. The next step is to trade in the new MAF I got and see if that does anything.
i went a step colder for safety reasons. I have full bolt ons with the JB+
O2 sensor is probably shot because I have a catless downpipe.
i have about 85k on the motor
im pretty sure it’s installed correctly lol. It’s kind of a no brainer install
i went a step colder for safety reasons. I have full bolt ons with the JB+
O2 sensor is probably shot because I have a catless downpipe.
i have about 85k on the motor
im pretty sure it’s installed correctly lol. It’s kind of a no brainer install
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From: WNY
Just trying to get the whole story 
A JB+ should only need 1-step colder plugs, maybe, not 2-step colder.
If your air filter was recently re-oiled, could be a source of fouling on the MAF.
P0172 rich condition usually means the MAF is reporting the wrong air flow.
A JB+ should only need 1-step colder plugs, maybe, not 2-step colder.
If your air filter was recently re-oiled, could be a source of fouling on the MAF.
P0172 rich condition usually means the MAF is reporting the wrong air flow.
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2nd Gear
Joined: Feb 2017
Posts: 109
Likes: 7
From: Arkansas
That’s fine lol. I’m always vague 🤦🏽*♂️
It was oiled recently. I’m going to try these little fixes and see if anything happens. I’m was trying to see if there was anything I’m missing. Thank you!
It was oiled recently. I’m going to try these little fixes and see if anything happens. I’m was trying to see if there was anything I’m missing. Thank you!
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2nd Gear
Joined: Feb 2017
Posts: 109
Likes: 7
From: Arkansas
After reading around how plugs work, I don’t agree too well with what your saying. I was running the car for a few months with the colder plugs as well without any issues. No stutters or hesistation. I got it colder plugs to prevent pre det.
Anyways issues are solved, my two of my spark plugs were fouled out.
i forgot to mentioned I used a can of CRC intake valve cleaner 🤦🏽*♂️
Anyways issues are solved, my two of my spark plugs were fouled out.
i forgot to mentioned I used a can of CRC intake valve cleaner 🤦🏽*♂️
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