There are checks to be done as the sensors may be working but seeing bad information.
Below are the possibilities for all the codes. All these items need to be checked to be sure of the reason for the codes.
The odds of having four sensors fail at the same time is like you getting hit by lightning two times in one day.
O2 Sensor Signal Biased/Stuck Rich - Bank 1, Sensor 1
Air Leaks After Mass Air Flow (MAF) Sensor
Cylinder Compression Incorrect
Diaphragm or Exhaust Gas Recirculation (EGR) Vacuum Regulator Leaking
Engine Oil Dipstick Seated Incorrectly
Evaporative Emissions (EVAP) System Purge Valve Stuck Open
Exhaust Gas Recirculation (EGR) Valve Malfunction
Exhaust Leaks Before or Near Heated Oxygen Sensor (HO2S)
Harness Connections Incorrect
Harness or Heated Oxygen Sensor (HO2S) Short to Voltage
Heated Oxygen Sensor (HO2S)
Heated Oxygen Sensor (HO2S) Circuit Open
Positive Crankcase Ventilation (PCV) System Leaking or Valve Stuck Open
Powertrain Control Module (PCM) Damaged
Universal Oxygen Sensor Pumping Current (UO2SPC) Circuit Open
Water in Harness Connector
Wednesday, April 14th, 2021 AT 12:08 PM