SAAB WIS ONLINE

(TA248-0335) Extra Diagnosis - P0106 00

TECHNICAL ADVICE - Quick information for your help
Bulletin Nbr: TA248-0335
Date: ........... December 2003
Market: All
Extra Diagnosis - P0106 00

VEHICLES CONCERNED

Saab 9-3 (9440).

BACKGROUND

Diagnostic Trouble Code P0106 00 - Manifold Absolute Pressure Sensor, Performance Problem, is designed to detect two different problems by measuring the inlet manifold pressure when the throttle is closing rapidly.

CONDITIONS


Too slow reaction on the Manifold Absolute Pressure Sensor (dirt or defect in the sensor)

Too high pressure in the inlet manifold (air leakage problem).


When the throttle is closed at high engine speed, the inlet manifold pressure should fall below 50 kpa within a certain time.

If the pressure doesn't fall enough or doesn't fall fast enough there is a problem with the sensor or there is air leakage around the inlet manifold.

SYMPTOM DESCRIPTION

If the DTC P0106 00 is set and the failed part cannot be found by normal fault tracing in WIS, the problem can be caused by incorrect camshaft timing.

In this case the air leakage comes from the inlet valves since they are not closing when they should.

Air will be pushed back into the inlet manifold by the pistons and causes the pressure in the inlet manifold to fall too slowly.

ACTION


Check camshaft timing according to WIS.

If the camshaft timing is incorrect then this is the root cause to the DTC.

Correct the camshaft timing and retest to code does not recur.