What the Code Establishes
For the 906/OM651 application covered by LI49.20-N-060290, P246309 and P246385 indicate unacceptable calculated soot content with different fault subtypes. The bulletin also warns that a sensor-system fault can report a false high soot load. A generic scan-tool percentage is therefore not enough to choose a repair.
Required Diagnostic Direction
The bulletin calls for the XENTRY guided tests, saved freeze-frame and CDI performance data, differential-pressure-sensor plausibility testing, compression and injector checks, charge-air and exhaust leak checks, exhaust-temperature and emissions-sensor wiring checks, and physical inspection of the tailpipe and DPF.
When Regeneration Enters the Process
In the bulletin's covered case, a driving regeneration follows only when the guided testing and inspection do not identify DPF damage or another disqualifying fault. If no fault is found, the bulletin says DPF replacement is not permissible. A replacement filter requires the prescribed teach-in procedure.
Do Not Generalize the Bulletin
LI49.20-N-060290 is dated January 28, 2015 and applies to Model 906 vehicles with the OM651 engine. A VS30 or different engine requires its matching Mercedes diagnostic documentation. Do not transfer its sequence, thresholds, or replacement authorization to another application.
Owner Reality Check
Check to see if it is throwing a p2459 code. That will tell you if the ecu believes it is regenerating too much or too little.
— r/Sprinters member, frequent-regeneration discussion, July 2023
Read the cited owner discussion. Owner reports identify practical questions; the OEM or product documentation establishes specifications and procedures.
Owner Action Plan Before the Appointment
- Photograph the cluster message and note mileage, ambient conditions, recent idling, and the drive when it appeared.
- Save the complete code set and freeze-frame data; do not clear it to make the warning disappear.
- Give the shop the exact chassis, engine, model year, and prior emissions repairs.
- Ask which Mercedes procedure applies to this vehicle and which prerequisite tests passed or failed.
- Request the diagnostic result separately from any regeneration, cleaning, or replacement quote.
Questions for the Repair Order
- Was the differential-pressure reading checked for plausibility?
- Were charge-air and exhaust leaks checked?
- Were temperature and emissions-sensor wiring checked?
- Was the DPF inspected for contamination or physical damage?
- What test result authorizes regeneration or replacement on this exact application?
I have a sprinter that is driven around by my employee… a combination of street driving… brought the DPF level to 124% and now the van seems to be going into a limp mode.
— r/Sprinters owner, July 2024
This is an owner-reported scanner value and symptom, not a Mercedes replacement threshold. Read the owner discussion.
DVA Build Planning After Diagnosis
Once the van is mechanically cleared, use current DVA pages for the build: LoadSpan-T rails, DualTrack-T crossbars, and the Sprinter roof collection. These products do not alter Mercedes emissions procedures.
Mercedes Sprinter: DualTrack-T™ Cross Bar | 2-Rail Kit
Current fitment, configuration, included hardware, and technical details are maintained on the live product page.
Sources
- Daimler LI49.20-N-060290 P2463 diagnostic bulletin
- Mercedes-Benz Sprinter 907 Body and Equipment Guideline
- Owner discussion: frequent regeneration
The DVA Setup for This
Plan the Sprinter system from verified limits
Use the live DVA product pages for current fitment, included hardware, price, and installation requirements. Product hardware does not increase the vehicle rating.
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