P1150moderate severityPowertrain
Lack of HO2S Switch — Adaptive Fuel at Limit (Bank 2)
on 2006 Ford Explorer 4.6L V8 · 4WD
What this code means
The upstream heated oxygen sensor on Bank 2 is not switching properly, and the adaptive fuel strategy has reached its correction limit on Bank 2.
Symptoms
- Check Engine Light
- Poor fuel economy
- Rough idle
- Failed emissions
Common causes
- Large vacuum leak affecting Bank 2
- Faulty O2 sensor Bank 2
- Exhaust leak near Bank 2 sensor
- Fuel delivery issue Bank 2
Diagnostic steps
- Check for vacuum leaks on Bank 2 side
- Monitor O2 sensor switching
- Check fuel pressure
- Inspect exhaust for leaks
Repair notes
Repair vacuum or exhaust leaks. Replace O2 sensor if not switching.
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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