Why does my PCM set the code p0161?
There are a couple of reasons why the PCM could set the code P0161: 1 Faulty oxygen sensor 2 An issue with the oxygen sensor heater circuit (i.e., an open, a short, or high resistance) 3 An issue with the PCM
Can a faulty oxygen sensor trigger a p0141 code?
If your vehicle only has four cylinders, it will only have one bank and, typically, one downstream sensor, so it can’t trigger this code. Instead, a faulty downstream heated oxygen sensor will be set as P0141 or Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2).
What does p0161 stand for on the Check Engine light?
The PCM monitors the heater circuit and will turn on the check engine light if it finds a problem. Code P0161 stands for HO2S heater Performance Bank 2 Sensor 2. This indicates the PCM has detected a problem with heater circuit of the downstream oxygen sensor.
What does p0161 mean on ho2s Bank 2?
Code P0161 stands for HO2S heater Performance Bank 2 Sensor 2. This indicates the PCM has detected a problem with heater circuit of the downstream oxygen sensor. Bank 2 refers to the side of the engine opposite the #1 cylinder. If you’ve got a four-cylinder, there will only be one bank, and you would not get this code.
There are a couple of reasons why the PCM could set the code P0161: 1 Faulty oxygen sensor 2 An issue with the oxygen sensor heater circuit (i.e., an open, a short, or high resistance) 3 An issue with the PCM
If your vehicle only has four cylinders, it will only have one bank and, typically, one downstream sensor, so it can’t trigger this code. Instead, a faulty downstream heated oxygen sensor will be set as P0141 or Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2).
When to reset the ECU after changing an O2 sensor?
Sometimes an O2 sensor fails, and you need to replace it. Once you’ve replaced your vehicle’s O2 sensor, you’ll need to reset the ECU so it can properly gather information from the new O2 sensor.
What does sensor 2 in the PCM mean?
The PCM uses the data from the heated oxygen sensors to calculate the right ratio of fuel delivery and monitor the catalytic converter’s performance. The Sensor 2 portion of the code’s definition refers to the downstream sensor, which is technically known as Sensor 2.