P0175 Hyundai Tucson
System Too Rich (Bank 2) · Powertrain Code · Medium · Repair: Moderate
What is P0175?
The engine is running rich on bank 2. Same causes as P0172 but affecting the opposite cylinder bank.
When the Hyundai Tucson triggers code P0175 (system too rich (bank 2)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Hyundai Tucson.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Hyundai Tucson.
Common Causes on Hyundai Tucson
- Contaminated MAF sensor on Bank 2 (V6 Lambda engines)
- Vacuum leak on Bank 2 intake manifold runner
- Leaking fuel injector on Bank 2 cylinder
- Clogged air filter restricting intake airflow
- Failed fuel pressure regulator allowing excess pressure
Symptoms
- Check Engine Light on
- Rich exhaust smell
- Poor fuel economy
- Rough running or misfires on Bank 2 cylinders
- Black deposits on Bank 2 spark plugs
Notes for Hyundai Tucson
P0175 only applies to V6 models (3.3L Lambda or 2.0T with dual bank); on 4-cylinder engines suspect P0172 instead.