What are the p0141 and p0161 oxygen sensor codes?

P0161: HO2S Heater Performance Bank 2 Sensor 2. Remember, these downstream oxygen (O2) sensors are also known as: post catalytic converter oxygen sensors or Rear oxygen sensors. Before you start testing/troubleshooting Codes P0141 and/or P0161, I highly recommend that you take a look at the following oxygen sensor test primer:

What causes the p0161 OBD-II trouble code?

This code means that the bank 2 sensor 2 oxygen sensor is not warming up properly due a problem in the oxygen sensor heater circuit. Vehicle emissions could be increased due to this problem. What causes the P0161 code?

What does the 02 sensor code on a GM Truck mean?

This code basically means that the Bank 2, Sensor 2 (or second o2 sensor back on bank 2) signal voltage is below what is considered normal for that sensor. It’s a four wire sensor being supplied a 0.5 volt reference voltage (usually on the signal wire) and a ground, as well as a power and ground circuit for the o2 sensor heater element.

What is the code for the O2 sensor?

If you find there is no battery voltage feeding the o2 sensor use the associated code to diagnose that. If you find the heater element bad, replace the sensor. If the heater element checks out then, using a jumper wire, supply a chassis ground to the o2 sensor connector (PCM side) ground circuit.

Why is the O2 sensor on my Chevy Suburban bad?

Your Suburban’s oxygen sensors are responsible for helping to keep your engine running at optimal efficiency. The engine management computer uses the data from all of the O2 sensors to keep the air/fuel mixture optimized. A bad oxygen sensor can affect the mixture greatly.

What is the code for an OBD-2 problem?

OBD-II Code P0161 is defined as a Oxygen Sensor Heater Circuit Malfunction (Bank 2, Sensor 2) The rear Oxygen Sensor is located in the exhaust system behind the catalytic converter(s). It sends critical feedback data to the Power Train Control Module or (PCM) that tracks the operational efficiency…

What to do if your O2 sensor is not working?

Clear the fault codes with your FIXD sensor and drive around to verify a failure. Check that the O2 sensor is getting battery voltage by using your multimeter. Test O2 sensor for proper voltage with a multimeter using the instructions from your vehicle’s repair manual. Damages found?

What does p0141 mean in Powertrain Control Module?

Code P0141 occurs when the powertrain control module tests the downstream heated oxygen sensor’s heater circuit on Bank 1 and detects a short in the circuit or excessive resistance in the heater circuit. P0141 Symptoms Check Engine Light is on

What does DTC code p0161 stand for?

Code P0161 indicates that there is an issue with the Bank 2, Sensor 2 O2 sensor’s heater circuit. What Does the P0161 Code Mean? Diagnostic trouble code (DTC) P0161 stands for “O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 2).” It warns about an issue with the Bank 2, Sensor 2 oxygen (O2) sensor’s heater circuit.

When does the Check Engine light log the p0141 code?

When it detects a problem in the heater circuit for the engine bank 1’s downstream oxygen sensor, it switches on the check engine light and logs the P0141 code. Why Do Oxygen Sensors Need Heat?

What are the p0141 and p0161 oxygen sensor codes?