The P0327 trouble code is an indication that the knock sensor on bank 1 has lower output voltage than normal; usually .5V or less.
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The P0320 code is triggered when there’s an electrical circuit fault in either the crankshaft position (CKP) sensor or camshaft position (CMP) sensor.
The P0193 trouble code indicates that the PCM has detected that the pressure of fuel is not within the range that’s predetermined by the car manufacturer.
The P0175 trouble code is triggered when there’s a rich condition in bank 2; i.e. there’s too little oxygen in the exhaust.
The P0157 happens when the ECM has determined that there’s a low voltage condition in bank 2 sensor 2; i.e. O2 sensor voltage remained too low for too long.