Technical Definition:
Heated Oxygen Sensor (HO2S) Heater Control Circuit (Bank 2 – Sensor 1)
Trouble Code: P0050
Address: 0x0050
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Address: 0x0050
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Technical Description:
Possible Causes:
Possible Symptoms:
- Lengthened time needed to achieve closed loop
- MIL (Malfunction indicator lamp) illumination
- Possibly decreased fuel mileage depending on fault
HO2S Heater Control Circuit Bank 2 Sensor 1
Possible Solutions:
- Failed or damaged heater circuit element inside the HO2S
- Open on the O2 sensor heater’s ground circuit
- Open or short on O2 sensor heater’s B+ battery feed
- Possible ECM failure
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 fuse
– Faulty Engine Control Module (ECM)