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Mercedes-Benz TSB #LI01.20-P-076894

2015 Mercedes-Benz E250

TSB Document:

Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

Summary
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 of the intake line assembly) may not work as intended Performed guided test for fault code P052E71. Replace intake line assembly if necessary per results of the guided test. Do not perform software update of N3/10 Engine control unit at this time. This LI will be updated once the software solution is available. This LI is in relation to NCU dated 8/31/2023 "Emission Extended Warranty – Intake Line Assembly".

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Date Published
SEP 12, 2023
NHTSA TSB #
10243308
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