Skip the auto shop - Our mechanics make house calls

Q: Getting error code P0172

asked by on

I am getting error code P0172. I need to find the reason for this and get it fixed.

A: This code refers to a rich condition on ban...

This code refers to a rich condition on bank 1. This means that the oxygen sensor detected too little oxygen in the exhaust pipe. A rich condition can be caused by many things like leaking injectors, a misfire in one or several cylinders, or even an oxygen sensor giving a bad reading. A qualified mechanic, such as one from YourMechanic, can run a diagnostic test and look at live data from a scan tool as well as pull any other codes stored in the memory. This information is necessary to properly diagnose the issue with your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: It feels like my car is about to break down, like I am very carefully carrying the engine home so it doesn't fall out.

Hi there. I would typically start by checking to see if the check engine light is on and then I would scan the computer for codes. This can give some insight as to what is going on. If there are...

Q: Water was spilled in the trunk which soaked the car battery. Car won't start now. Does water destroy a car battery?

Hi, thanks for writing in about the concern with the BMW 320i. If the battery was submerged in water then it's completely possible for the battery to short out and die. Your friend will need to have the battery replaced....

Q: Check Engine light and camshaft position sensor code

Hi. If you have a camshaft position sensor code that is coming up, then that is why the Check Engine Light is coming off and on. Most of the time, this is caused by a sensor failure, but it can...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...