Possible causes
– Faulty Rear Heated Oxygen Sensor Bank 2
– Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
– Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
– Inappropriate fuel pressure
– Faulty fuel injectors
– Intake air leaks
– Exhaust gas leaks
– Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
– Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
– Inappropriate fuel pressure
– Faulty fuel injectors
– Intake air leaks
– Exhaust gas leaks
Tech description
Replacing the Rear Heated Oxygen Sensor Bank 2 usually takes care of the problem.
When is the obd code mean?
The P0158 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible higher than usual fuel consumption
– Possible higher than usual fuel consumption
P0158 INFINITI OBD Code Description