SAAB WIS ONLINE

PSG16 / P0401 5A

Read the instructions below then start the fault diagnostic procedure.

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

  P0401 5A


EGR Flow To Low

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 between 1250 - 1500 and fuel quantity between 10 - 12.5 mg/combustion.
Engine speed between 1500 - 1750 and fuel quantity between 10 - 20 mg/combustion.
Engine speed between 1750 - 2750 and fuel quantity between 10 - 27.5 mg/combustion.
NONE of the following DTCs must be detected:
P0017
P0100, P0101, P0102, P0103
P0106, P0107, P0108
P0149, P1149
P0243, P0244
P0244 F6, P0245, P0246
P0335, P0336, P0337 FD
P0337 2E, P0341
P0400, P2413
P0403, P0404
P0642, P0643
P0652, P0653
P2100, P2102, P2103

Fault criteria:

Current EGR flow below requested EGR flow.
DTC limit between 150 - 300 mg air/combustion depending on the difference between fuel/combustion and rpm.

System reaction to a fault:

Limp Home, engine torque limitation.

Diagnostic help

EGR valve closes after one minute at idling speed.

The DTC indicates air leakage between the turbocharger and intake manifold.

Diagnostic help

Functions in the diagnostic tool related to the fault:

Test value:
Charge Air Control Valve
Swirl Control Valve
Control valve, shut-off damper
Engine RPM
Activate:
Charge Air Control Valve
Swirl Control Valve
Control valve, shut-off damper
(See also description of readings/activations in diagnostic tool)