P0123

2CF9 - P0123

Information saved in
DME

Fault code
2CF9 - P0123

Fault text
Throttle-valve potentiometer

Fault description
Throttle/Pedal Position Sensor/Switch 'A' Circuit High

Condition for fault identification
Test condition:
Nmot>480 rpm
Potentiometer voltage on throttle valve pot 1 is above
maximum possible value (4.746 V)
Terminal condition: Terminal 15=TRUE
Voltage condition:
battery voltage>7 V

Condition for fault memory entry
0.14 sec

Action in service
Check whether udkp1_w in test data block ADC test data >
4.746V ; check wiring harness, replace throttle valve, if
udkp1_w is still > 4.746V replace DME

Fault effect and breakdown warning


Driver information
Warning light:
MIL on in 2nd driving cycle + EPCL

Service instruction
none