P CODES (POWERTRAIN) P0100 - P0199 P0160

    A step-by-step guide on how to diagnose and repair trouble code P0160 - Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 2).

    Definition of P0160 Trouble Code

    The P0160 trouble code is a generic powertrain code related to the oxygen sensor. In particular, this code indicates that there is no activity detected from the oxygen sensor located on Bank 2, Sensor 2. Bank 2 refers to the side of the engine that does not contain cylinder #1, while Sensor 2 refers to the sensor located downstream of the catalytic converter.

    To put it simply, this code indicates that the sensor is not providing any feedback to the engine control module (ECM), which can cause a number of drivability issues and potentially lead to damage to the engine or emissions system.

    Diagnosing the P0160 Trouble Code

    When diagnosing the P0160 trouble code, there are a number of steps you can take to narrow down the potential causes of the issue. Here is a step-by-step guide on how to diagnose the code:

    Step 1: Use an OBD-II Scanner to Retrieve the Code

    The first step in diagnosing any trouble code is to use an OBD-II scanner to retrieve the code from the ECM. Once you have retrieved the code, make a note of it and clear the code from the ECM. This will allow you to determine whether the code is a persistent issue or a one-time occurrence.

    Step 2: Inspect the Oxygen Sensor Wiring

    The next step is to inspect the wiring that connects the oxygen sensor to the ECM. Look for any signs of damage, such as frayed wires or corroded connections. If you find any damage, repair or replace the wiring as necessary.

    Step 3: Check the Oxygen Sensor for Damage or Wear

    Inspect the oxygen sensor itself for any signs of damage or wear. Look for physical damage, such as cracks or breaks, as well as any signs of corrosion or contamination. If the sensor is damaged or contaminated, it will need to be replaced.

    Step 4: Test the Oxygen Sensor Signal

    Using a multimeter, test the signal coming from the oxygen sensor while the engine is running. The voltage should fluctuate between 0.1 and 0.9 volts. If there is no voltage or the voltage remains constant, this is an indication that the sensor is not functioning properly and will need to be replaced.

    Repairing the P0160 Trouble Code

    Once you have diagnosed the cause of the P0160 trouble code, the next step is to repair the issue. Depending on the cause of the code, you may need to replace the oxygen sensor, repair or replace the wiring, or perform other repairs.

    Replacing the Oxygen Sensor

    If the oxygen sensor is found to be faulty, it will need to be replaced. To replace the sensor, locate the sensor on the exhaust system and remove it using a wrench. Install the new sensor and reconnect the wiring.

    Repairing or Replacing the Wiring

    If the wiring is damaged or corroded, it will need to be repaired or replaced. To repair the wiring, cut out the damaged section and splice in a new piece of wiring. Alternatively, you may need to replace the entire wiring harness if the damage is extensive.


    In conclusion, the P0160 trouble code is a relatively common issue that can be caused by a variety of factors, including a faulty oxygen sensor or damaged wiring. By following the steps outlined above, you can diagnose and repair the issue, restoring proper function to the oxygen sensor and preventing further damage to your vehicle's engine or emissions system. It's worth noting that if you are not comfortable diagnosing or repairing the P0160 trouble code on your own, it's always best to seek the assistance of a qualified mechanic. They will have the expertise and tools necessary to quickly diagnose and repair the issue, ensuring that your vehicle remains safe and reliable on the road.

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