168A80

168A80 - P1328

Information saved in
DME

Fault code
168A80 - P1328

Fault text
Knock sensor 2, signal: engine mechanically too loud or KS
outside tolerance (sensitivity)

Fault description
The diagnostic function monitors the engine's noise level.

Condition for fault identification
Test condition:
The fault is logged in the ECU fault memory when the
reference level is too high relative to the program map.
Potential problem source(s):
- Knock sensor is defective or installed incorrectly
- Engine too loud owing to mechanical defect
- Low-quality fuel < RON 91
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- Engine warmed to normal temp, above 80 °C
Time condition:
- None
Other conditions:
- Engine on
- Engine speed above 1600 rpm
- Relative charge factor above 30%
- No load and no dynamic engine rpm change

Condition for fault memory entry
Debounce via event counter

Action in service
- Check installation torque and installation position of sensor
- Check wiring harness
- Check engine for mechanical defects (chain, crankshaft
assembly)
- Refuel with RON 95 or higher
- Replace knock sensor

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
Possible reduction in power

Driver information
Warning light:
ECE:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: on
- CC message: on
MY10 US:
- US emissions warning lamp: on
- US electronic engine power reduction: on
- CC message: on

Service instruction
None