SAAB WIS ONLINE

T8 / P0108 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Cruise control not working. Limp home Engine stops when idling.

  P0108 00


Manifold Absolute Pressure Sensor Circuit. Short to B+.

Fault symptom

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

Cruise control not working.

Limp home

Engine stops when idling.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 11 - 16 V.
Ignition ON.

Fault criteria:

When the voltage on the input exceeds 4.70 V for more than 1 s.

Dependent:

None

System reaction to a fault:

Torque limited to max. 170Nm.
Purge blocked.
Boost pressure adaption is blocked and reset.
Correction of mass air flow/combustion for fuel calculation is blocked.
Limited acceleration and idle function.
Cruise control blocked.
Secondary air injection function is disengaged if the secondary air injection pump is fitted.

OK report:

When fault criteria NOT fulfilled for 2 s.

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:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
Manifold absolute pressure sensor

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