P13B9

168A40 - P13B9

Information saved in
DME

Fault code
168A40 - P13B9

Fault text
Knock sensor, electrical: signal input B, short circuit to
positive

Fault description
The diagnostic function monitors the sensor wire for short
circuits.

Condition for fault identification
Test condition:
The fault is logged in the ECU fault memory when the
knock sensor's signal voltage is above 1 V.
Potential problem source(s):
- Defective wiring harness
- Knock sensor defective
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine ON

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Check wiring harness between knock sensor and DME
- Replace knock sensor
- Replace DME

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