One bank running rich. Bank 1 is the bank of cylinders that contains #1 cylinder. The build continues. AAH V6. Engine started to run rough at idle and lost some power. Here’s a great YouTube video on how to find a vacuum leak. 3 engine running rich is a malfunctioning oxygen sensor. Aug 2, 2023 · I have a 2014 2500 6. Oxygen Sensor – The P0172 code is thrown when the B1S1 O2 sensor does not register the Jul 27, 2018 · 2004 - 2008 F150 - 5. Oxygen Sensor – The P0172 code is thrown when the B1S1 O2 sensor does not register Mar 31, 2021 · 2004 - 2008 F150 - 5. Oct 23, 2014 · What is "Bank 1" referring to? I only have one O2 upstream. Mar 7, 2017 · I have pulled up P0172 (bank 1) Running Rich and P0175 (bank 2) running rich. guy at the parts store directed me to the fuel pressure regulator. :frown: As the title says, the engine is running rich on one bank, and lean on the other. Little to no change, still runs rough. Ltft was -30 and -33 this was a real cause for concern even though my truck was running fine. This code indicates that the engine is running too rich and can cause a variety of issues, such as reduced fuel efficiency, rough idling, and decreased engine Sep 21, 2023 · Okay this is a hard one I am very great full for any input. 0, only aftermarket parts were a 19lb calibrated bullet maf, an adjustable fuel pressure regulator, o/r h pipe and catback. what can cause bank 1 to be way lean and bank 2 to be rich? if the injector pw are the same between banks? Jul 25, 2006 · Took the plugs out of my D1 at the weekend, four plugs in one bank were ok, nice tan colour, no deposits. Fuel trim is at +30%. Itook it to the first tuning shop, who after a month apparently Jan 17, 2009 · running rich on one side? Two part question The 1967 - 1972 Chevrolet & GMC Pickups Message Board May 18, 2016 · 2004 - 2008 Ford F150 - P0172 System too rich Bank 1 - fuel injector issue? - I've had the P0172 code for awhile, and figured it was due to my Bank 1 Sensor 1 o2 sensor being out. Bank 2 is the side of your engine block that does not contain your #1 cylinder. Does that sound like an O2 sensor thing? What else should I look at? I cannot figure out why my bank 1 is running so rich I suspect injectors I haven't even started tuning for driving down the road because of how bad that bank 1 is rich. For some reason bank one is running very rich intermittently, causing the engine to run rough and misfire on the one side. But let's check on that misfire. If I do a KAM reset and set both banks back to zero it only takes seconds for them to return to their Learn what a P0172 code means, the most common causes and how to fix it A P0172 code is defined as System too Rich (Bank 1). Got the tps set . Recently replaced fuel filter and fuel pump. Here are the symptoms. OBD II fault code P0172 is a generic trouble code that is defined as, P0172 – “Fuel System Too Rich Bank 1” and is set when the PCM (Powertrain Control Module) detects an overly rich air/fuel mixture on Bank 1. The O2 code could mean the cat finally plugged up due to running rich. I found that the catalytic converter on bank 2 is bad and clogged. The code is telling you that it’s seeing a constantly rich reading from the oxygen sensor located in the Bank 1 exhaust stream. I have been driving it for a while now and eventually I throw a code for running rich bank one and bank 2. 7, code P0172 will be triggered. This did not solve the issue. 0 SOHC, 170k miles. Mar 29, 2025 · When the air-to-fuel mix is too rich, that means that there is too much fuel in the mix. Start from beginning. Fuel pressure may drop slightly, but should remain stable for at least 10 or 15 minutes. Feb 17, 2020 · Posting this to help others find their problem I had gotten a rich code one day on my 2005 tundra (2uzV8) for only one bank. Gain an understanding of this common automotive issue. Paying a mechanic to check it before purchaseing could of saved you alot of moneyjust saying It is running rich on one bank, Bank1, in closed loop only (runs fine cold in open loop). When we shut her off, it slowly drops to 20. I’m afraid to run it since running rich probably destroyed the converter the first time. It refers to an issue with the air-fuel mixture on bank 1 of the engine running too rich. - Replaced All plugs, Still no change. The problem seems to only be affecting one side Jul 29, 2008 · Hi all What would make one bank of cylinders run rich, it is always bank B never the other one but the o2 sensors seem to be giving the same readings on both sides. But don’t worry! Understanding this code is the first step in getting your car back to peak performance. Let’s dive into what the P2188 code means, its symptoms, causes, diagnosis process, and solutions to get you back on Jul 19, 2001 · C4 Tech/Performance - One cylinder bank running rich, or lean? - My driver's side Corsa muffler is consistently darker than the passenger side one. gnw9us z3avk4 55eyl e6 3jrl q2vr 18ej zvnbs9t tpjdsz qmu