K88992892

Solution K88992892
Tuesday, March 5, 2019 5:01:58 PM CET
Mack Models
LR , TE - TerraPro , AN - Anthem , GR - Granite , PI - Pinnacle
Mack Model
Volvo Models
VNL , VNR , VNX , VAH , VHD
Volvo Model
Engine family
Engine family
11L Engine , 13L Engine , MP7 , MP8
Emission Standard
Emission Standard
US17+OBD16 , US17+OBD18 , US17+OBD19
** SOLUTION **
Title
Assembled Camshaft - Injector Lobe Rotation Inspection; Diagnostic Trouble Codes
(DTC) P0257-00, P2A17-00, Or P2A1F-00, Possible Lack Of Power – US17+OBD16
and Newer Emissions
Vehicles equipped with an assembled camshaft may present with DTCs P0257-
Cause
00, P2A17-00, P2A1F-00 logging, and a possible report of instances of low power.
It is possible that these conditions are created by a cam lobe that has rotated on the
camshaft itself.
Solution
An eService case should be opened with a detailed description of the findings from
the inspection steps below.
This procedure should be performed if the following conditions are present:
• Fault codes listed below are present on a DTC Readout:
P025
Injection Pump Fuel Metering Control "B" Range/Performance (Cam
7
/Rotor/Injector)
P2A
Injection Pump Fuel Metering Control "D" Range/Performance (Cam
17
/Rotor/Injector)
P2A
Injection Pump Fuel Metering Control "F" Range/Performance (Cam
1F
/Rotor/Injector)
Inspection Steps
1. Rotate the engine with the turning tool in the normal direction of rotation until the timing
marks are aligned for the Injector Pump(s). While the engine is being rotated, confirm each
injector lobe is rotating with the camshaft and does not slip.
2. Once the timing marks are aligned for a specific Injector Pump, verify the injector rocker
roller is on the base circle of the injector lobe. Refer to the illustration below.
Note: If an injector lobe rotates on the camshaft, the rotation is normally by 60 degrees. It
takes approximately 15 degrees of rotation before potentially causing the faults codes listed
previously or a fault for a pumping injector during the Common Rail Fuel System Test.
Solution visibility
Dealer distribution
Function(s)/component(s) affected
Function affected
injectors
Function Group
Function Group
214 valve mechanism , 237 injector and delivery pipe
Customer effect
Main customer effect
power , fault code/display
Fault code(s)
OBDII Diagnostic Trouble
Codes (2013- )
P0257-00 , P2A17-00 , P2A1F-00
Conditions
Frequency of occurrence of
problem
random
Administration
Author
UT0455H
Dealer ID
UT0455H
Last modified by
A084727
Creation date
06-02-2019 22:02
Date of last update
01-03-2019 20:03
Status
Published
NA_Author_Group
GTT