Defender. Manual - part 128

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

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

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

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.