P0151moderate severityPowertrain
O2 Sensor Circuit Low Voltage Bank 2 Sensor 1
on 2011 Hyundai Tucson 2.0L I4 · AWD
What this code means
The upstream O2 sensor voltage on Bank 2 is staying low.
Symptoms
- Check Engine Light
- Lean running Bank 2
- Rough idle
Common causes
- Vacuum leak Bank 2
- Faulty sensor
- Exhaust leak
- Low fuel pressure
Diagnostic steps
- Check vacuum leaks Bank 2
- Monitor sensor voltage
- Test fuel pressure
Repair notes
Fix leak or replace sensor.
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