2AB5

2AB5 - P16A4

Information saved in
DME

Fault code
2AB5 - P16A4

Fault text
DME, internal fault: knock-sensor module

Fault description
Timeout Control Module Knock Sensor SPI-Bus

Condition for fault identification
Test condition:
Monitoring of knock sensor chip
Engine speed >320 rpm
Terminal condition: Terminal 15, engine on
Voltage condition:
none

Condition for fault memory entry
Yes, by event counter. Fault must occur ten times before a
fault memory entry is made.

Action in service
Determine whether fault is stored again after carrying out
the following procedure. If yes: Replace DME.
1. Clear fault memory
2. Ignition off, allow vehicle to assume complete dormant
status
3. Ignition on
4. Read out stored fault codes from fault memory

Fault effect and breakdown warning


Driver information
Warning light:
none

Service instruction
none