Knock Sensor 1 (G61) Problem

Hi Guys,

I have problem in my 1.6 BSE engine. 

Following error occurs:

Address 01: Engine Labels: 06A-906-033-BGU.lbl 
Part No: 06A 906 033 HA 
Component: SIMOS71 1.6l 2VG 1039 
Revision: --H04--- Serial number: XXXXXXXXXXXX 
Coding: 0004071 
Shop #: WSC 73430 790 00000 
VCID: 65C5B5A7D7A1 

1 Fault Found: 
16711 - Knock Sensor 1 (G61): Signal too Low 
P0327 - 007 - Short to Ground - Intermittent 
Freeze Frame: 
RPM: 3136 /min 
Mass Air / Rev.: 376.1 mg/str 
Ign. Timing: 0.4 °ATDC 
Voltage: 0.180 V 
RPM: 3040 /min 
Mass Air / Rev.: 376.1 mg/str 
Ign. Timing: 0.4 °ATDC 
Voltage: 0.180 V 

Readiness: 0000 0000 

Sometimes the engine works irregular (Irregular rpm), and that’s all, no power loss or something like that . 

Circuit  short to ground means that something’s wrong with sensor ? Or is a  symptom that the sensor detects unusual vibration?