2017 Volvo P0172: What It Means & Is It Safe to Drive?
P0172 on the 2017 Volvo: System Too Rich (Bank 1). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
PowertrainMedium urgency
What this code means
Too much fuel relative to air. O2 sensor detects low oxygen in exhaust; PCM is reducing fuel trim.
Common causes on the 2017 Volvo
- Faulty MAF or O2 sensor
- Leaking fuel injector(s)
- High fuel pressure
- Faulty purge valve stuck open
Symptoms
- Check Engine Light
- Rich smell, black smoke
- Poor fuel economy
- Rough idle possible
Typical fixes
- Replace MAF or O2 sensor
- Test fuel pressure and injectors
- Replace purge valve if stuck open
Repair cost range
For a 2017 Volvo, repairs for P0172 typically fall between $100 and $600, depending on the root cause and labor rates in your area.
Known issues on Volvo
Volvo T5 P0172 rich Bank 1 is typically a stuck-open purge solenoid or a leaking fuel injector. On turbocharged T5 engines, a failed boost pressure sensor can cause over-fueling—check the boost sensor and intake hose connections alongside the purge valve.
Most commonly affected models
S60 T5 B5254T 2001–2009XC70 T5 2001–2007V70 T5 2001–2007