2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction
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2EF4
2EF4 - P0128
Information saved in
DME
Fault code
2EF4 - P0128
Fault text
Map thermostat, mechanism
Fault description
Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
Condition for fault identification
Test condition:
Outside temperature >-10 锟斤拷C
Start temperature (coolant temperature)<65 锟斤拷C und >-10 锟斤拷C
Speed > 30 and<130km/h
Terminal condition: Terminal 15, engine on Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
Once release point is reached 25 sec.
Action in service
Check heating of engine
Check thermostat and replace as indicated
Fault effect and breakdown warning
Driver information
Warning light:
MIL on in 2nd driving cycle
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