P0161 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

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P0161 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

Technical Description

Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)

What does that mean?

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.

It basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor’s heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).

Symptoms

Causes

A code P0161 may mean that one or more of the following has happened:

  • HO2S heater power circuit open
  • HO2S heater ground circuit open
  • HO2S signal tracking (due to oil or moisture in the connector)
  • HO2S is damaged or has failed PCM has failed
  • Possible Solutions

  • Replace HO2 Sensor
  • Repair open or short in power circuit
  • Repair open or short in ground circuit
  • Repair damaged connector due to tracking
  • Need help?

    Let us fix your problem. You are most welcome our diagnosis experts have in most cases the knowledge and skills to find the cause of the error code p0161 and to solve the problems.

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    "Delete Error Code Permanently, Disable DTC Error Code Function for p0161 in the ECU"

    In extreme cases, we even have the option to permanently remove the specific DTC p0161 and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.

    Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p0161.

    Make an appointment for permanent removal of p0161