skinner41
Active Member
- Messages
- 36
- Location
- North central Nebraska
I have a 2010 h3 alpha and after I filled it with gas I get these codes. We ran into one heck of a storm right after we filled up. Could it be crappy gas?
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P0172.P0175 P219a
- Thread starter skinner41
- Start date
Crappy? More like very very good gas. Those are fuel bank "too rich" codes. Either you got a magic mix of some 105 octane or your engine isn't getting enough O2. Possibly a dirty maf sensor, dirty air filter etc etc.
If you are running rich that is not a bad thing. Running too lean is a bad thing. In fact enjoy that extra power from running a little rich.
Also storms usually mean more humidity which is water vapor. There are kits to run water vapor directly into your intake to make more power and be more fuel effecient. HHO kits. They are quite the rage right now with people wanting to get extreme mpgs. Like 50+ mpgs. So from the storm you might have been getting some free HHO which triggered your rich codes. Again too rich isn't a bad thing as long as the engine hasnt lost power and idles well.
Hope that helps
If you are running rich that is not a bad thing. Running too lean is a bad thing. In fact enjoy that extra power from running a little rich.
Also storms usually mean more humidity which is water vapor. There are kits to run water vapor directly into your intake to make more power and be more fuel effecient. HHO kits. They are quite the rage right now with people wanting to get extreme mpgs. Like 50+ mpgs. So from the storm you might have been getting some free HHO which triggered your rich codes. Again too rich isn't a bad thing as long as the engine hasnt lost power and idles well.
Hope that helps
chaos254
Well-Known Member
- Messages
- 577
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- United States
Too rich can foul out your plugs and cause issues with your cats. Like airborne suggested, check the simple things first, air filter, check vaccum lines, clean the maf. Could also have a bad o2 sensor
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skinner41
Active Member
- Messages
- 36
- Location
- North central Nebraska
I did check the air filter.Thought maybe I sucked it full of water but looked good.I did clear the codes but they keep coming back on.
Did you clean the maf sensor? You can get some maf sensor cleaner at any auto store. I would do that next. Also run some injector cleaner one may be getting "stuck" open a little too long to the point they PCM can't let enough O2 in to compensate with the rich afr.
skinner41
Active Member
- Messages
- 36
- Location
- North central Nebraska
I had a couple of guys tell me that low fuel pressure will cause those codes.I have 43 to 44 psi. Any thoughts?
I'm not sure why that would be making you run rich though. Low fuel pressure would be less fuel not more.
For that rich of an afr for it to throw a code I'm guessing you would be something close to 11or10:1. Stoich is 14.7:1. I run around 12.5:1 with the way I have it tuned and haven't thrown a code ever. I'm really thinking faulty injectors at this point. That would be the only thing to be dumping that much fuel and your PCM not being able to keep the afr up with allowing more air in.
For that rich of an afr for it to throw a code I'm guessing you would be something close to 11or10:1. Stoich is 14.7:1. I run around 12.5:1 with the way I have it tuned and haven't thrown a code ever. I'm really thinking faulty injectors at this point. That would be the only thing to be dumping that much fuel and your PCM not being able to keep the afr up with allowing more air in.