P1105

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE. Engine speed drops slower than normal when accelerator pedal is released.

P1105

Fault symptoms

•	CHECK ENGINE.

•	Engine speed drops slower than normal when accelerator pedal is released.

On-Board Diagnostics

Type of diagnosis:

-	Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:

-	General conditions for this trouble code: When starting the engine, the atmospheric pressure must exceed 78 kPa and the engine coolant and intake air temperatures must exceed -7°C.

-	Engine running. Engine speed exceeding 1500 rpm. Intake manifold pressure exceeding a value that is 5 kPa lower than atmospheric pressure.

Fault criteria:

-	Charge air pressure below a value 5 kPa higher than atmospheric pressure. Criteria fulfilled for more than 3 s.

Dependents:

-	P0106, P0107, P0108, P1106, P1107, P1108, P1631, P1632, P1633 and P1641.

System reaction to a fault:

-	Density compensation of the throttle angle is blocked.

OK report:

-	Charge air pressure exceeds atmospheric pressure at any time during the driving cycle.

Fault handling: (See “Fault diagnosis, general” for more information.)

-

Type III.

Diagnostic help

Fault diagnosis concerns a leak in the hose to the sensor or between the compressor and the throttle body.

Functions in the diagnostic tool related to the fault:

•	Diagnostic status for the diagnosis.

•	Pressure sensor value, unit kPa.

During acceleration, the value should exceed the value for the two other pressure sensors.

See also the description of readings in ”Fault diagnosis, general” for more information.