Technical Definition:
Heated Oxygen Sensor (HO2S) Heater Control Circuit Low (Bank 2 – Sensor 2)
Trouble Code: P0057
Address: 0x0057
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Address: 0x0057
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Technical Description:
Possible Causes:
- Bank 2,2 oxygen sensor heater element has failed
- Physical damage to heated oxygen sensor has occurred
- Control circuit (or voltage feed, depending on system) is shorted to ground
- PCM Oxygen sensor heater driver has failed
Possible Symptoms:
- Malfunction indicator lamp (MIL) illumination
- There will likely be no other symptoms
HO2S Heater Control Circuit Low Bank 2 Sensor 2
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection
– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse
– Faulty Engine Control Module (ECM)