Check Engine Code
P0175
System Too Rich (Bank 2)
Severity: medium
DIY difficulty: 2/5
Typical cost: $20–$700
What P0175 means
Bank 2 twin of P0172. ECM is pulling fuel to compensate for a rich condition.
Symptoms
- CEL
- Black smoke under load
- Fuel smell
- Fouled spark plugs
- Bad fuel economy
Likely causes (most common first)
- Leaking fuel injector(s)
- Failed fuel pressure regulator
- Saturated EVAP canister
- Contaminated MAF
- Failed O2 sensor stuck rich
Can I keep driving?
Medium — drivable but fix soon
Typical repair cost
DIY fixes can start near $20 (parts only). Shop repairs for P0175 typically run up to $700 depending on the underlying cause and vehicle. Start with the most common cause — Leaking fuel injector(s) — before throwing parts at it.
Symptoms that match P0175
If you got here from a search query, one of these might describe what your car is actually doing:
Recommended parts & tools for P0175
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