P0174
System Too Lean Bank 2
Generic code
Fuel and Air Metering
High severity
Hard repair
Free on OBD DashX
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What P0174 means
- The fault code P0174 indicates that there is an issue with the fuel system in the engine and that the engine is running too lean on bank 2. If left unaddressed, this may lead to poor performance, reduced fuel efficiency, and potential damage to the engine.
Possible symptoms
- Illuminated check engine light
- Poor engine performance
- Reduced fuel efficiency
- Rough idle or stalling
- Engine misfires or hesitates during acceleration
Possible causes
- Faulty oxygen sensor
- Clogged fuel filter
- Malfunctioning fuel pump
- Vacuum leaks in the intake manifold
- Faulty mass air flow (MAF) sensor
- Leaking exhaust system components
- Failed fuel injectors
Related parts
- Fuel Injection System: Fuel injection system controls the amount of fuel to be delivered through the fuel injectors. Problems lead to engine misfire, engine stalling
Possible solutions
- Replace the faulty oxygen sensor
- Replace the clogged fuel filter
- Repair or replace the malfunctioning fuel pump
- Seal any vacuum leaks in the intake manifold
- Replace the faulty mass air flow (MAF) sensor
- Repair or replace any leaking exhaust system components
- Replace failed fuel injectors
Free on OBD DashX
P0174 on OBD DashX
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