If a customer complains about the above error, this could be caused by the diesel particulate filter. Not least of all, this problem would also cause a lack of power. This complaint has been observed even in vehicles that are used for short trips with many cold starts. The error code "P1901- Particulate Filter Pressure Sensor" could also be stored in memory. In this case, proceed as follows:
- To rule out other error sources, all relevant systems and components should be tested. During the testing, also pay attention to the wiring and check for problem-free contacts (corrosion in the plug connections).
- If no errors are discovered in these parts, the particulate filter should be regenerated by hand.
- To prevent subsequent damage, the particulate filter must be cold.
- The regeneration process produces high temperatures in the exhaust system! For this reason, do not park the vehicle on combustible surfaces.
To guarantee comprehensive repair, the software should also be updated. Therefore the interval for the regeneration process will be significantly shortened.
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.