8/30/2018

JTB00413NAS2 - Engine MIL Illuminated With DTC P008B Stored | TOPIx

JTB00413NAS2

TECHNICAL BULLETIN
30 AUG 2018

© Jaguar Land Rover North America, LLC
NOTE: The information in Technical Bulletins is intended for use by trained, professional Technicians with
the knowledge, tools, and equipment required to do the job properly and safely. It informs these
Technicians of conditions that may occur on some vehicles, or provides information that could assist in
proper vehicle service. The procedures should not be performed by 'do-it-yourselfers'. If you are not a
Retailer, do not assume that a condition described affects your vehicle. Contact an authorized Jaguar
service facility to determine whether this bulletin applies to a specific vehicle.

INFORMATION

This reissue replaces all previous versions. Please destroy all previous versions.
Changes are highlighted in blue

SECTION:
303-04

SUBJECT/CONCERN:
Engine MIL Illuminated With DTC P008B Stored

AFFECTED VEHICLE RANGE:
MODEL:
XF (X250)

MODEL YEAR:
2013-2015

https://topix.jaguar.jlrext.com/topix/content/document/view?id=923855

VIN:
S61362-U88785

APPLICABILITY:
GTDi 2.0L Petrol
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MARKETS:
NORTH AMERICA

CONDITION SUMMARY:

SITUATION:
The engine MIL (Malfunction Indicator Lamp) may be illuminated on the Instrument Cluster (IC) with DTC
(Diagnostic Trouble Code) P008B stored in the Powertrain Control Module (PCM).

CAUSE:
This may be caused by an internal fault with the Fuel Supply Line Pressure Sensor.

ACTION:
Should a Customer express this concern, follow the Workshop Procedure outlined below.

PARTS:
PART NUMBER
C2D49979

DESCRIPTION
Fuel Supply Line Pressure Sensor

QUANTITY
1

TOOLS:



Jaguar Land Roverapproved
Midtronics battery
power supply

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Jaguar Land Roverapproved
diagnostic
equipment with
latest SDD
Software
Management Pack

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JTB00413NAS2 - Engine MIL Illuminated With DTC P008B Stored | TOPIx

WARRANTY:

NOTES:
Repair procedures are under constant review, and therefore times are subject to change; those
quoted here must be taken as guidance only. Always refer to JLR claims submission system to
obtain the latest repair time.
The JLR Claims Submission System requires the use of causal part numbers. Labor only claims
must show the causal part number with a quantity of zero.
DESCRIPTION

SRO

TIME (HOURS)

CONDITION CODE

CAUSAL PART

Low Fuel Pressure Sensor - Renew

19.22.32

0.1

42

C2D24881

Read and clear fault codes

86.99.78

0.2

42

C2D24881

NOTE:
Normal Warranty procedures apply.

WORKSHOP PROCEDURE:

CAUTIONS:
A Jaguar Land Rover-approved Midtronics battery power supply must be connected to the
vehicle start up battery during diagnosis / module programming.
All ignition ON/OFF requests must be performed; failure to do this may cause damage to control
modules in the vehicle.

NOTE:
The 'Fuel Supply Line Pressure Sensor' may also be referred to as the 'Fuel Rail Pressure - Low
Range Sensor'.

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JTB00413NAS2 - Engine MIL Illuminated With DTC P008B Stored | TOPIx

Connect the Jaguar Land Rover-approved Midtronics battery power supply to the vehicle startup
battery.

2

NOTE:
The Jaguar Land Rover-approved diagnostic equipment must be loaded with SDD154.02
Software Management Pack v300 (or later).
Connect the Jaguar Land Rover-approved diagnostic equipment to the vehicle and begin a new
session.

3

Follow all on-screen instructions, allowing the diagnostic equipment to read the VIN, identify the
vehicle, and initiating the data collect sequence.

4

A faulty Fuel Supply Line Pressure Sensor will cause DTC 'P008B - Low pressure fuel system Pressure too high'.

5

View the snapshot data for P008B and read the voltage for Fuel rail pressure - Low range
sensor.
A recorded voltage of approximately 4.75v suggests that the Fuel Supply Line
Pressure Sensor has an internal fault.
Complete the tests below to confirm the diagnosis.

6

7

Use Datalogger to view the Fuel rail pressure - Low range sensor (PCM) signals.

NOTE:
Faults on the low pressure fuel system can affect the high pressure fuel pump behavior
and may result in incorrect diagnosis.
With the transmission in Park (P), start the engine, let idle for 60 seconds, and monitor the Fuel
rail pressure ‐ Low range sensor signal:
1 During the first 30 seconds after a cold engine start, the Fuel Supply Line Pressure
Sensor should read between approximately 2.85v and 3.15v.

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If the engine is hot when started, this voltage range may not be achieved; go to
Substep 2 below.
2 Between 30 seconds and 1 minute after the engine start, the engine speed will reduce
and the voltage reading should drop to approximately 2.15v to 2.45v.
This voltage drop may take longer to happen if the engine is still warming up.
3 These voltage measurements indicate the Fuel Supply Line Pressure Sensor is operating
normally.
A faulty Fuel Supply Line Pressure Sensor will display the following readings:
With the ignition switched ON and the engine OFF, the Fuel Supply Line
Pressure Sensor will display a reading of approximately 4.1v.
This reading remains constant until the engine is started.
With the engine running, the reading will increase to approximately 4.75v.
This reading remains constant until the engine is stopped.
If these characteristics are observed, replace the Fuel Supply Line
Pressure Sensor (see TOPIx Workshop Manual section 303-14: Electronic
Engine Controls - GTDI 2.0L Petrol - Fuel Supply Line Pressure Sensor).
8

When all tasks are finished, exit the Datalogger application.

9

Exit the current session.
1 Select the Session tab.
2 Select the Close Session option.

10

Disconnect the diagnostic equipment and battery power supply from the vehicle.

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