P0174 Dodge Hornet
System Too Lean (Bank 2) · Powertrain Code · High · Repair: Moderate
What is P0174?
The engine is running lean on bank 2. Same causes as P0171 but affecting the opposite cylinder bank on V-engines.
When the Dodge Hornet triggers code P0174 (system too lean (bank 2)), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Dodge Hornet.
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 Dodge Hornet.
Common Causes on Dodge Hornet
- Cracked turbo charge pipe on 2.0L GME turbo
- PCV system failure in valve cover
- Vacuum leak at brake booster connection
- Mass airflow sensor contamination
- Fuel injector carbon buildup from GDI system
Symptoms
- Rough idle especially when cold
- Hesitation or stumble on acceleration
- Engine surging at steady throttle
- Lean misfire under load
- Poor fuel economy
- Check engine light illuminated
Notes for Dodge Hornet
P0174 is uncommon on 4-cylinder Hornet models as they only have one bank. The 2.0L GME turbo is an inline-4 and would only set P0171.