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