SAAB WIS ONLINE

T8 / P0244 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Limp home

  P0244 00


Charge Air Control Valve Circuit, Performance problem

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Limp home

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

General conditions for this DTC
Engine temperature above -7°C.
Lowest atmospheric pressure 72 kPa.
NONE of the following DTCs must be detected:
P0245, P0246
Test 1
Engine running.

Test 2
Engine temperature over 71°C.
Engine speed more than 1900 rpm.
Charge air pressure more than current atmospheric pressure + 39 kPa.
Throttle position 10% - 50%.

Fault criteria:


Test 1
When the air mass is 250 mg/C higher than the requested value.

Test 2
When the actual boost pressure is 20 to 25 kPa higher than requested.

Dependent:


P0101, P0102, P0103
P0106, P0107, P0108
P0236, P0237, P0238
P2227, P2228, P2229

System reaction to a fault:

Torque limited to max. 170Nm.

OK report:

Test 1 and Test 2 completed once and fault criteria not fulfilled.

Fault handling:

Type III
(See section Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Turbo system fault causing high boost pressure.
A check to ensure that the boost pressure is not excessive is made when the engine load is moderate and constant.

Functions in the diagnostic tool related to the fault:

Test value:
Charge Air Absolute Pressure
Manifold Absolute Pressure
Atmosphere Absoslute Pressure
Charge Air Control Valve

Activation:
Charge Air Control Valve

(See also description of readings/activations in diagnostic tool)