Friday, September 13, 2019

2CFB - P1644

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



none









2CFB - P1644 (DME)



2CFB - P1644







Information saved in



DME









Fault code



2CFB - P1644









Fault text



Throttle-valve adaptation value









Fault description



Throttle Valve Adaptation Stop Relearning Lower Mechanical Stop (Bank 1)









Condition for fault identification



Test condition:





Terminal change and request for adaptation Terminal condition: Terminal 15 ON Voltage condition:





Voltage in onboard electrical system >= 10 V









Condition for fault memory entry



none









Action in service



Check: Sum of throttle valve voltages must equal 5 V,



Perform electrical check on wires to throttle valve sensors,



visual inspection of plug-in terminals (at components, wiring harness and DME),





Check to determine whether objects that could physically prevent the throttle valve from closing are present in the intake manifold or throttle valve,



Replace component







Fault effect and breakdown warning







Driver information



Warning light:





CC status report: Reduced engine performance!, MIL ON





EMB + rpm limit 1300 rpm

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