2CF6 - P0121

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2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction



none









2CF6



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



Check: The sum of throttle valve voltages must equal 5 V,



Perform electrical check on wiring from DME to throttle valve,



Visual inspection of plug-in contacts (at component, wiring harness and DME),



Replace component







Fault effect and breakdown warning







Driver information



Warning light:





CC status report: WAL_1, reduced engine output!, MIL ON





possible EMB + rpm limit at 1300 rpm

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