Technical Definition:
Heated Oxygen Sensor (HO2S) Heater Control Circuit (Bank 1 – Sensor 3)
Trouble Code: P0042
Address: 0x0042
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Address: 0x0042
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Technical Description:
Possible Causes:
Possible Symptoms:
HO2S Heater Control Circuit Bank 1 Sensor 3
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 is open shorted to ground
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 poor electrical connection
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 fuse
– Faulty Engine Control Module (ECM)