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P0175: System Too Rich (Bank 2)
Severity: Medium Drive gently and get it diagnosed soon.
What does P0175 mean?
Same as P0172 but on bank 2. Both banks rich usually means a shared cause like fuel pressure or a sensor.
Generic OBD-II definition: System Too Rich (Bank 2). Confirm applicability in your vehicle service information.
Common causes
- Leaking injector
- Faulty MAF sensor
- High fuel pressure
- Clogged air filter
Symptoms
- Fuel smell
- Poor fuel economy
- Rough idle
Can I keep driving with P0175?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Check air filter
- Test sensors
- Check fuel pressure