P016A Code: Meaning, Causes, and Symptoms | OBD2 Codes

P016A – O2 Sensor Not Ready Bank 1 Sensor 1

 

P016A Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light),High Fuel Consumption,Excessive Smoke from Exhaust

 

P016A Possible Causes

 

Faulty Heated Oxygen Bank 1 Sensor 1,Heated Oxygen Bank 1 Sensor 1 harness is open or shorted,Heated Oxygen Bank 1 Sensor 1 circuit poor electrical connection,Inappropriate fuel pressure,Faulty fuel injectors,Exhaust leaks the Heated Oxygen Bank 1 Sensor 1

 

P016A Description

 

The Heated Oxygen Sensor (HO2S) monitor tracks the rate of voltage change during the rise and fall of the HO2S signal. When the rate of voltage change is less than a calibrated value, the Powertrain Control Module (PCM) begins to modify the fuel trim attempting to increase the HO2S voltage switch rate. The DTC sets when the PCM is at the allowable limit or has exceeded an allowable length of time for fuel trim modification, without detecting an acceptable rate of voltage change.