Trouble code
P0175
System Too Rich (Bank 2)
What P0175 means
Rich condition on bank 2. With P0172 alongside it, look for a shared cause.
Symptoms you may notice
- Black smoke
- Fuel smell
- Poor economy
Common causes, cheapest first
- Leaking injectors
- Fuel pressure regulator fault
- Mass airflow sensor fault
- Restricted air filter
Before you buy anythingBoth banks rich points at fuel pressure or the airflow signal, not at individual injectors.
What to do next
- Confirm the code with your own scan tool, or have it read free at a chain parts store.
- Decode your VIN so you know your exact engine and build date.
- Work down the causes above from cheapest to most expensive.
- Search NHTSA for a recall or service bulletin covering this symptom on your vehicle.
- Read the engine buying guide before ordering.
P0175 is a generic OBD-II code, standardized across every make and model sold in the US from 1996 onward. The meaning is the same on any vehicle; the specific part and its location are not.
Parts
Parts commonly needed for P0175
These go to Amazon. We earn a commission if you buy, at no extra cost to you — see our affiliate disclosure. Which one you actually need depends on diagnosis — read the note above first.
Confirm fitment against your VIN on the listing page before ordering. A part that matches your year and model can still be wrong for your build date or engine code.