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.

Why is my O2 sensor code po161?

I replace my O2 sen cause I was having PO161 CODE after replacing my O2 sensor the CEL turned-off. 20 miles later PO141 and PO161 came back on. Any idea what is going? I order a replacement O2 SEN part thinking it’s defective.

What does p0161 mean on a ho2s heater?

P0161 is a diagnostic trouble code (DTC) for “HO2S Heater Circuit Malfunction (Bank 2 Sensor 2)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

When does the PCM set the p0161 code?

When you start the engine the PCM monitors the HO2S voltage. When the HO2S voltage goes above or below the bias range threshold, the PCM determines how much time it took. If the PCM detects that the process took too much time for the HO2S to enter into normal operating range, the P0161 code will set.

What causes the p0161 code on a Jeep Grand Cherokee?

P0161 is a very common OBDII code that occurs in the Jeep Grand Cherokee. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2.

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.

What does p0135, p0141, and p0161 mean?

Won’t pass state mandated emission testing. As mentioned at the beginning of the article, P0135, P0141, P0155, and P0161 DTCs share one specific and common thread: a Heater Circuit Malfunction. What does this mean? Before I jump into an explanation of what the codes mean I’ll share with you some basic working theory of how the O2 sensor works.

What does the DTC p0135 mean on an oxygen sensor?

Each one of these diagnostic trouble codes (DTCs) ( P0135, P0141, P0155, P0161) indicate a problem with the oxygen sensor’s internal heater element and from personal experience I can tell you that diagnosing them is not hard. Let’s get started.

Why is my Check Engine light on code p0135?

Code P0135 occurs when the powertrain control module tests the upstream heated oxygen sensor’s heater circuit on Bank 1 and detects a short in the circuit or excessive resistance in the heater circuit. What Are The Symptoms Of Code P0135? Check Engine Light is on

Why does my Chevy Silverado have a p0161 code?

P0161 is a very common OBDII code that occurs in the Chevy Silverado. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2. Replacing the Oxygen sensor will fix the problem a majority of the time. Some of the other causes of P0161 are listed below.

What’s the difference between p0135 and p0141?

I looked up each code and the P0141, 155, and 161 start with saying check for possible related causes to P0135. See picture 1. Now interestingly, if you look at pic 2, it shows the possible causes of a P0135. Note the one I highlighted. This is where I think you need to start. I feel water is causing a short and setting all of the codes you have.

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