P0174 Dodge Charger
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 Charger 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 Charger.
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 Charger.
Common Causes on Dodge Charger
- Intake manifold gasket leak on bank 2 of 5.7L or 6.4L HEMI
- Broken exhaust manifold bolt on passenger side causing exhaust leak
- Bank 2 fuel injector failure from MDS deactivation cycling
- PCV valve failure on passenger valve cover
- Vacuum leak at intake manifold vacuum port on bank 2
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 Charger
HEMI exhaust manifold bolt failures are extremely common on Charger and Challenger V8 models. This causes a bank 2 exhaust leak that triggers P0174.