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Definition of Diagnostic Trouble Code (DTC) P0157 Diagnostic Trouble Code (DTC) P0157 stands for “Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2).” ” This code appears when the downstream oxygen sensor on Bank 2 shows a low voltage signal for too long.
Definition of OBD-II trouble code P0158: The P0158 code stands for “O2 Sensor Circuit High Voltage (Bank 2, Sensor 2).” ” It shows that the powertrain control module (PCM) detects a high voltage signal from the oxygen sensor located in Bank 2, Sensor 2. This is often called a “rich” condition.
You won’t be able to start your car in some cases. You mostly won’t be able to start the car when it fails. If you must drive and your car is starting, don’t speed up and make sure your next stop is to a mechanic. However, if you start the car but can’t hear the whirring sound, you might need a fuel pump replacement.
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