Engine Controls System: 102611

102611 - P0102

Information saved in
DME

Fault code
102611 - P0102

Fault text
Air-mass sensor, signal: implausible period duration, loose
contact at high frequency

Fault description
The diagnostic function monitors the lower limit of the
digital HFM signal's period duration.

Condition for fault identification
Test condition:
This fault is recognized when the period duration of the
HFM signal is less than 84 �s.
Potential problem source(s):
- Defect in wiring harness between HFM and DME
- Mass-airflow sensor defective
- Defective DME
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 DME and mass-airflow
sensor
- Replace mass-airflow sensor
- Replace DME

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
Engine runs roughly

Driver information
Warning light:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: on
- CC message: on
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
None