P0121

2CF6 - P0121

Information saved in
DME

Fault code
2CF6 - P0121

Fault text
Throttle-valve potentiometer 1, plausibility to air mass

Fault description
Throttle/Pedal Position Sensor/Switch 'A' Circuit
Range/Performance

Condition for fault identification
Test condition:
Plausibility check on throttle valve aperture angle as
measured aginst modelled data
Terminal condition: Terminal 15 on, engine on
Voltage condition:
Voltage in onboard electrical system >= 10 V

Condition for fault memory entry
0.25 sec.

Action in service
1) Check: The sum of throttle valve voltages must equal 5
V,
2) Perform electrical check on wiring from DME to throttle
valve,
3) Visual inspection of plug-in contacts (at component,
wiring harness and DME),
4) Replace component

Fault effect and breakdown warning


Driver information
Warning light:
CC None status report: WAL_1, reduced engine output!,
MIL ON
possible EMB + rpm limit at 1300 rpm

Service instruction
none