P0175 means system too rich (bank 2). Too much fuel on bank 2. Same rich-running symptoms: fuel smell, black smoke, terrible mileage.
Drive gently and get it diagnosed within days.
Too much fuel on bank 2. Same rich-running symptoms: fuel smell, black smoke, terrible mileage.
Most common.
Over-reporting airflow.
Regulator failure.
Clogged filter or intake.
Bad trim feedback.
Typically $100–$600
Injector service typically $150–$400; regulator typically $200–$400. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.
Driveable, but don't run rich for weeks — converter and oil dilution risk.
Typically $100–$600. Injector service typically $150–$400; regulator typically $200–$400. Estimates vary by vehicle.
Drive gently and get it diagnosed within days.
The most common cause is leaking injector(s) on bank 2. Most common.