1F1A81

1F1A81 - P16EB

Information saved in
DME

Fault code
1F1A81 - P16EB

Fault text
DME, internal fault, watchdog output: faulty
question/answer communication

Fault description
The diagnostic function monitors the internal WDA wire in
the DME.

Condition for fault identification
Test condition:
The fault is recognized by the self-diagnosis.
Potential problem source(s):
- DME defective
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

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

Action in service
- Only replace the DME if the fault remains present
continuously or if the fault frequency is greater than 3

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- Breakdown in extreme cases

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

Service instruction
- A terminal status switch must be conducted before this
fault can be deleted.