TECHNICAL BULLETIN
LTB00461NAS2
20-DEC-12
ISSUE ‘2’ CHANGES ARE HIGHLIGHTED IN GRAY
SECTION: 303

Engine MIL Illuminated with DTC P0126-26 / P0128-00 Stored
AFFECTED VEHICLE RANGE:
Range Rover (LM) 5.0L Naturally Aspirated only

VIN:
Model Year:

AA304426-CA393632
2010-2012

CONDITION SUMMARY:
Situation: The engine Malfunction Indicator Lamp (MIL) may be illuminated and Diagnostic Trouble Code
(DTC) P0126-26 / P0128-00 stored in the Engine Control Module (ECM).
Cause: This may be caused by the engine temperature sensor being misread due to an airlock in the engine
cooling system
Action: In the event of a customer concern of the above, refer to the Repair Procedure outlined below.

PARTS:
CN100168L ............. Clips
LR040874 ................ Bypass hose kit
LR044428 ................ Coolant hose

Qty: 2
Qty: 1
Qty: 1

TOOLS:
IDS with latest IDS-DVD and Calibration File
Land Rover-approved Midtronics Vehicle Power Supply
Refer to Workshop Manual / Repair Procedure for any required special tools

WARRANTY:
NOTE: 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 DDW to obtain the latest repair
time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a
quantity of zero.
SRO

DESCRIPTION

TIME
(HOURS)

CONDITION
CODE

CAUSAL
PART

Coolant bypass - between expansion tank and heater pipes 26.30.89.82

0.30

42

LR011465

Read and clear DTCs

0.20

42

LR011465

12.90.16

Normal Warranty policies and procedures apply

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 Land Rover service facility to
determine whether this bulletin applies to a specific vehicle.
© Jaguar Land Rover North America, LLC

555 MacArthur Boulevard

Mahwah, NJ 07430

REPAIR PROCEDURE
1. Check the coolant level and top up to the specified level if
required.
2. Remove the coolant expansion tank cap.
3. Remove the high-level bleed screw as shown.

4.

NOTE: The coolant level will rise in the coolant tank
and drain the upper coolant pipes.
Remove the coolant expansion tank bleed screw.

5. Remove the coolant elbow.
•

Disconnect and remove the quick fit elbow.

•

Release the securing clip.

6. Install the new coolant hose (LR04428) and hose from kit
LR040874:
•

Connect to the T-piece.

•

Install the securing clip.

7. Secure the new hose to the fixing clip.

8. Run the new coolant hose under the air box intake pipe.

9.

CAUTION: Make sure no damage is caused to the
vehicle when cutting the hose.
NOTE: Hose shown already cut.
Using a suitable tool, cut the coolant hose 25mm / 1.0in
from the second white line.

10. Install the new T-piece:
•

Tighten / secure the two clamps.

11. Secure the cooling hose with a suitable cable tie.

12. Install the high-level and coolant expansion tank bleed
screws and coolant expansion tank cap.
13. Start the engine and allow the cooling system to self-bleed.
14. Read and clear all Diagnostic Trouble Codes (DTC).