LI07 04-N-066219
Service Bulletin Details
Public Details for: LI07 04-N-066219
Engine diagnosis warning lamp active, malfunction at exhaust back pressure sensor
- 9999 -
Models from 9999
9999 MERCEDES-BENZ SPRINTER 906 |
Engine diagnosis warning lamp active, malfunction at exhaust back pressure sensor Topic number LI07.04-N-066219 Version 3 Design group 07.04 Sender, Feeler, Sensors Date 07-13-2017 Validity 906 with Engine 642 and 651 Reason for change Added DTCs and example of incorrect reading Reason for block Complaint: Engine diagnosis warning lamp is active; engine power output is reduced. A fault relating to the exhaust back pressure sensor (B60) is stored in the engine control unit. CDI6 (OM642) 118900 Component B60/4 (Exhaust back pressure sensor) has a plausibility error. CDI60 / CR60NFZ (OM642) P159300 | There is an internal fault in component 'B60/4 (Exhaust back pressure sensor)'. | CR60NFZ047162, P159400 | There is an internal fault in component 'B60/4 (Exhaust back pressure sensor)' | CR60NFZ P159600 | The signal line of component 'B60/4 (Exhaust back pressure sensor)' has a short circuit to ground | CR60NFZ CR43NFZ (OM651) P047162 Exhaust back pressure sensor 1 has a malfunction. The signal comparison is faulty. Cause: An incorrect exhaust back pressure sensor may have been installed during previous repairs. There are two types of back pressure sensors used, absolute pressure sensor and relative pressure sensor. Although the sensors look the same and will fit in the same locations they are different and the vehicle may have the incorrect sensor installed. The actual value of the exhaust back pressure sensor (B60) with engine OFF is implausible. The exhaust back pressure is approx. 2 bar or the exhaust back pressure deviates with engine OFF by approx. 300 400 mbar from the other pressure sensor 07-13-2017 2:48 PM © Copyright Daimler AG DAVANDE Page 1/3 Example: Check component "B60/4 (Exhaust back pressure)" by means of actual value Status of associated actual values Name Exhaust temperature upstream of turbocharger - 38°C Exhaust back pressure (raw value) - 0.50v Exhaust back pressure - 504hPa Atmosperic pressure - 979hPa Intake air pressure - 977hPa Attachments File Description vents.JPG Relative pressure sensor with vent hole shown Remedy: As of model year 2013 (SA code 803), an absolute exhaust back pressure sensor is used. Relative pressure sensor Engine 642: A006 153 60 28 - (replaced by) A007 153 43 28 - (replaced by) A009 153 50 28 - (with vent hole next to contact springs at sensor) * Relative pressure sensor Engine 651: A651 905 02 00 - (replaced by) A009 153 51 28 - (with vent hole next to contact springs at sensor) * Absolute pressure sensor Engine 642/651: A009 153 52 28 - (replaced by) A000 905 27 06 - (without vent hole) * Note: Engine wiring harness - A642 150 90 89 may be required, check EPC * As of this posting the part numbers listed are for reference purposes, always verify the current part number in EPC by Vehicle Identification Number (VIN) to ensure the correct sensor is used. Attachments File Description harness.JPG Engine Wiring harness 07-13-2017 2:48 PM © Copyright Daimler AG DAVANDE Page 2/3 Symptoms Power generation / Engine management / Engine performance / Goes into limp-home mode Parts Part number ES1 ES2 Designation Quantity Note EPC A 009 153 50 28 Pressure Sensor * 1 Relative (OM642) X A 009 153 51 28 Pressure Sensor * 1 Relative (OM651) X A 000 905 27 06 Pressure Sensor * 1 Absolute (OM642/651) X A 642 150 90 89 Engine Wiring Harness 1 As required by EPC X Attachments vents.JPG: harness.JPG: 07-13-2017 2:48 PM © Copyright Daimler AG DAVANDE Page 3/3