P0137moderate severityPowertrain
O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
on 2018 Lincoln MKX 2.7L EcoBoost V6 · AWD
What this code means
The downstream O2 sensor on Bank 1 is reading low voltage consistently.
Symptoms
- Check Engine Light
- Failed emissions
Common causes
- Faulty sensor
- Exhaust leak after cat
- Wiring short to ground
Diagnostic steps
- Test sensor voltage
- Check for exhaust leaks
- Inspect wiring
Repair notes
Replace sensor or repair leak.
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