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What is the meaning of OBD-II code P0161, and what are the possible causes and solutions for this code to be generated?
The P0161 code indicates an issue with the bank 2 sensor 2 oxygen sensor's heating circuit, causing the sensor to not warm up properly. This can lead to higher vehicle emissions. There are several possible causes for a P0161 code, such as: -Incorrect resistance in the heater circuit To diagnose a P0161 trouble code, a mechanic will perform a visual inspection of the bank 2 sensor 2 oxygen sensor wiring, measure the resistance of the heater circuit using a multimeter, and check the rest of the circuit's wiring. If the wiring is okay, the likely problem is the powertrain control module. The resolution to the P0161 code varies based on the cause, but options include replacing the bank 2 sensor 2 oxygen sensor or repairing the heater circuit wiring.
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