P0050low severityPowertrain
HO2S Heater Control Circuit Bank 2 Sensor 1
on 2018 Lincoln MKX 2.7L EcoBoost V6 · AWD
What this code means
The PCM detected a malfunction in the heater circuit of the upstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- Poor fuel economy
- Longer warmup emissions
Common causes
- Faulty O2 sensor heater
- Blown fuse
- Wiring damage
Diagnostic steps
- Check fuse
- Test heater resistance
- Inspect wiring
- Test PCM output
Repair notes
Replace O2 sensor or repair wiring.
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