P0174high severityPowertrain
System Too Lean Bank 2
on 2011 Lincoln MKX 3.7L V6 · AWD
What this code means
The long-term fuel trim for Bank 2 has exceeded the positive limit, indicating lean running on Bank 2.
Symptoms
- Check Engine Light
- Rough idle
- Hesitation
- Possible misfires
Common causes
- Vacuum leak Bank 2 side
- Low fuel pressure
- Faulty MAF sensor
- Exhaust leak Bank 2
- Clogged injector Bank 2
Diagnostic steps
- Check fuel trim Bank 2
- Smoke test Bank 2 intake
- Test fuel pressure
- Test MAF sensor
- Check for exhaust leaks Bank 2
Repair notes
Same diagnostic approach as P0171 but focused on Bank 2.
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1