Defender. Manual — part 128
![](/vehicles/onond/qug/lecmbuttig/xito.png)
circuit - signal
frequency too low
sensor A
circuit: short
circuit to
power
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
ground
Turbocharger
boost control
position
sensor A
circuit: open
circuit
Turbocharger
fault
Check turbocharger sensor and circuit. Refer to the electrical guides.
Install a new turbocharger if necessary.
REFER to:
Turbocharger
(303-04B Fuel Charging and Controls -
Turbocharger - 2.4L Duratorq-TDCi HPCR (103kW/140PS) - Puma,
Removal and Installation).
Clear the DTCs and test for normal operation.
P256237 Turbocharger
boost control
position sensor A
circuit - signal
frequency too high
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
power
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
ground
Turbocharger
boost control
position
sensor A
circuit: open
circuit
Turbocharger
fault
P25632F Turbocharger
boost control
position sensor A
circuit
range/performance
- signal erratic
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
power
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
ground
Turbocharger
boost control
position
sensor A
circuit: open
circuit
Turbocharger
fault
Check turbocharger sensor and circuit. Refer to the electrical guides.
P256372 Turbocharger
boost control
position sensor A
circuit
range/performance
- actuator stuck
open
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
power
Turbocharger
boost control
position
![](/vehicles/onond/qug/lecmbuttig/fetip.png)
position
sensor A
circuit: short
circuit to
ground
Turbocharger
boost control
position
sensor A
circuit: open
circuit
Turbocharger
fault
Install a new turbocharger if necessary.
REFER to:
Turbocharger
(303-04B Fuel Charging and Controls -
Turbocharger - 2.4L Duratorq-TDCi HPCR (103kW/140PS) - Puma,
Removal and Installation).
Clear the DTCs and test for normal operation.
P256373 Turbocharger
boost control
position sensor A
circuit
range/performance
- actuator stuck
closed
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
power
Turbocharger
boost control
position
sensor A
circuit: short
circuit to
ground
Turbocharger
boost control
position
sensor A
circuit: open
circuit
Turbocharger
fault
![](/vehicles/onond/qug/lecmbuttig/his.png)
Fuel Charging and Controls - Turbocharger - 2.4L Duratorq-TDCi HPCR
(103kW/140PS) - Puma - Turbocharger
Removal and Installation
Removal
1.
WARNING: Do not work on or under a vehicle
supported only by a jack. Always support the vehicle on safety
stands.
Raise and support the vehicle.
For additional information, refer to:
Lifting
(100-02 Jacking
and Lifting, Description and Operation).
2. Remove the air cleaner outlet pipe.
For additional information, refer to:
Air Cleaner Outlet Pipe
(303-12 Intake Air Distribution and Filtering - 2.4L Duratorq-
TDCi HPCR (103kW/140PS) - Puma, Removal and
Installation).
3. Disconnect the charge air cooler inlet hose.
Release the clip.
4. Disconnect the turbocharger electrical connector.
5. Remove the turbocharger heat shield.
Remove the 5 bolts.
6. Remove and discard the 4 nuts from the catalytic
![](/vehicles/onond/qug/lecmbuttig/vine.png)
6. Remove and discard the 4 nuts from the catalytic
converter.
7. Remove and discard the 4 studs from the catalytic
converter.
8. Release the catalytic converter.
Remove and discard the 2 nuts.
9. Release the catalytic converter.
Loosen the 4 bolts.
10. Remove the catalytic converter bracket.
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