LI01.20-P-076894
Service Bulletin Details
Public Details for: LI01.20-P-076894
Check engine light illuminated fault code stored in n3/10 control unit- P052E71 positive crankcase ventilation regulator valve performance: the valve for crankcase ventilation has a malfunction the partial-load ventilation valve (a part
- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 -
Models from 2020
2020 MERCEDES-BENZ GLC350E |
2020 MERCEDES-BENZ SLC300 |
Models from 2019
2019 MERCEDES-BENZ E300 |
2019 MERCEDES-BENZ GLC300 |
2019 MERCEDES-BENZ GLC350E |
2019 MERCEDES-BENZ SLC300 |
Models from 2018
2018 MERCEDES-BENZ C300 |
2018 MERCEDES BENZ C300 4MATIC |
2018 MERCEDES-BENZ C350E |
2018 MERCEDES-BENZ E300 |
2018 MERCEDES-BENZ GLC300 |
2018 MERCEDES-BENZ GLC350E |
2018 MERCEDES-BENZ SLC300 |
Models from 2017
2017 MERCEDES-BENZ C300 |
2017 MERCEDES-BENZ C350E |
2017 MERCEDES-BENZ E300 |
2017 MERCEDES-BENZ GLC300 |
2017 MERCEDES-BENZ SLC300 |
Models from 2016
2016 MERCEDES-BENZ C300 |
2016 MERCEDES-BENZ C350E |
2016 MERCEDES-BENZ GLC300 |
2016 MERCEDES BENZ SLK300 |
Models from 2015
2015 MERCEDES-BENZ C300 |
M274 Check engine light, P052E71 Crankcase ventilation valve Topic number LI01.20-P-076894 Version 2 Function group 01.20 - Crankcase ventilation, cylinder head cover Date 4/15/24 Validity Passenger car with engine M274 Reason for change Remedy modified Complaint Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 – Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction Cause The partial-load ventilation valve (a part of the intake line assembly) may not work as intended. Remedy Model year 2015-2018 Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. This LI will be updated once the software solution is available for model year 2015-2018 vehicles. Model year 2019 Perform software update for N3/10 Engine control unit. Replacement of intake line assembly is not required. This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty – Intake Line Assembly". WIS-References Document number Title Note AR01.20-P-9692MRU Remove/install oil separator on crankcase Symptoms Power generation > Exhaust system > Function > Fumes/blue smoke Power generation > Engine management > Engine running > Runs rough/shakes Power generation > Engine management > Indicator lamp > Engine diagnosis > lit 16.04.2024 18:13 © Copyright Mercedes-Benz AG CCUSHWA Page 1 / 2 Power generation > Engine management > Engine performance > No/poor output Parts Part number ES1 ES2 Designation A274090560080 Quantity Note Intake line assembly 1 EPC inclusive of oil separator, partial load ventilation valve and full-load ventilation valve X Control unit/fault code Control unit Fault text N3/10 - Motor electronics 'MED40' for combustion engine P052E71 - The valve for crankcase ventilation has a mal'M274' (ME) (MED40) function. The actuator is blocked. Operation numbers/damage codes Op. no. Operation text Time Solenoid valve, crankcase ventilation system 16.04.2024 18:13 © Copyright Mercedes-Benz AG CCUSHWA Damage code Note 0101D Damage code Page 2 / 2