Ask Andy AIP0175 System Too Rich (Bank 2)
What it means, what causes it, and what it costs to fix.
What P0175 means
Bank 2 is running rich. The computer is cutting fuel as far as it can and still sees too much. With P0172 also set, look for a shared cause like fuel pressure or the MAF. Bank 2 alone points to injectors on that side.
Can I drive with P0175?
Severity: Medium. Fix soon so it doesn't turn into something bigger.
Drivable short term, but fix it before it fouls plugs or damages the catalytic converter.
Get a diagnosis for your exact car
Tell Andy your year, make, model, and symptoms. You'll get best case, most likely, and worst case, with parts and labor costs. Free, in about 15 seconds.
Ask Andy about P0175Symptoms
- Fuel smell
- Black smoke
- Poor mileage
- Rough idle
Common causes
Most likely first.
- Leaking injector on bank 2
- High fuel pressure (bad regulator)
- Dirty MAF sensor
- Faulty coolant temperature sensor
How to diagnose P0175
- Check whether P0172 is also present.
- Compare fuel trims between banks.
- Test fuel pressure and check injectors on bank 2.
Tip: most US auto parts stores will read your codes for free.
Repair costs
| Fuel pressure regulator | $150–$450 installed |
| Fuel injector | $150–$500 installed |
| MAF sensor | $10 cleaning to $350 installed |
Typical US prices. Your vehicle, region, and shop rates will change these.
P0175 FAQ
What does P0175 mean?
P0175 means "System Too Rich (Bank 2)." Bank 2 is running rich. The computer is cutting fuel as far as it can and still sees too much. With P0172 also set, look for a shared cause like fuel pressure or the MAF. Bank 2 alone points to injectors on that side.
Can I drive with a P0175 code?
Drivable short term, but fix it before it fouls plugs or damages the catalytic converter.
What is the most common cause of P0175?
The most common cause is: Leaking injector on bank 2. Other causes include high fuel pressure and dirty maf sensor.
How much does it cost to fix P0175?
Typical repairs run about $10 to $500 in the US, depending on the cause. Fuel pressure regulator: $150–$450 installed.
Still not sure what's wrong?
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