LI09.00-P-074093

MY15+ M278 and M157 Equipped Vehicles with
Fault Code "P023400 – Boost Pressure is Too High"
Topic number
LI09.00-P-074093
Version
1
Function group
09.00 - General
Date
12/8/21
Validity
Model year 2015 and newer vehicles equipped with the
M157 of M278 biturbo V8
Reason for change
Reason for block
published by accident
Complaint
Customer complains of CEL on in the instrument cluster. May also report drivability issues and/or inconsistent power
delivery.
Cause
Under investigation
Remedy
Open a PTSS case and include in it:
•
•
•
ME Control unit log
Initial quick test with fault freeze
The results of the guided tests for the fault code
Do not replace any parts until instructed to via PTSS
Symptoms
Power generation > Engine management > Indicator lamp > Engine diagnosis > lit
Control unit/fault code
Control unit
Fault text
N3/10 - Motor electronics 'MED177' for combustion engine 'M157/M276/M278' (ME)
P023400 - The boost pressure of turbocharger 1 is too
high. _
Operation numbers/damage codes
Op. no.
Operation text
09.12.2021 00:10:33
© Copyright Mercedes-Benz AG
Time
HENRAND
Damage
code
Note
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09.12.2021 00:10:33
© Copyright Mercedes-Benz AG
HENRAND
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