SAAB WIS ONLINE

PSG16 / P2227 FA

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Performance loss.

  P2227 FA


Manifold Absolute Pressure Sensor Circuit. Plausibility Fault with Atmosphere Pressure.

Fault symptom

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

Performance loss.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running.
Engine speed below 950 rpm and below 15 mg/combustion.
NONE of the following DTCs must be detected:
P0106, P0107, P0108
P0642, P0643
P0652, P0653

Fault criteria:

Difference between boost pressure sensor and atmospheric sensor is greater than 22.5 kPa for more than 3 seconds.

Dependent:

P0016
P0106, P0107, P0108
P0335
P2102
P2228, P2229

System reaction to a fault:

The control module uses a substitute value of 70 kPa.

Checking the wiring harness

Faults in the control module female connector can be the cause of the DTC. Check the connector with respect to oxidation, depressed pins and pin clamping force.
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:


Functions in the diagnostic tool related to the fault:

Test value:
Intake pressure sensor
Atmospheric Pressure
Atmosphere Pressure Sensor
(See also description of readings/activations in diagnostic tool)