2F12 - P0645

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



none









2F12 - P0645 (DME)



2F12 - P0645







Information saved in



DME









Fault code



2F12 - P0645









Fault text



Air-conditioning compressor, activation









Fault description



A/C Clutch Relay Control Circuit









Condition for fault identification



Test condition:





Air conditioner relay control-activation monitor; air conditioning initialized





Briefly triggered by relay





Air conditioning installed and switched on





Terminal condition: Terminal 15 ON Voltage condition:





Voltage in onboard electrical system > 10 V









Condition for fault memory entry



1 sec.









Action in service



2. Check wiring Repair if defective





If wiring is OK proceed





to check component, a/c compressor relay









Fault effect and breakdown warning

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