SAAB WIS ONLINE

PSG16 / P1404 04

Read the instructions below then start the fault diagnostic procedure.

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

  P1404 04


EGR Valve PWM Signal Circuit. Open Circuit.

Fault symptom

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

Performance loss.

Cruise control switched off.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Open circuit on the output for more than 0.6 s.

System reaction to a fault:

Limp Home, engine torque limitation.
EGR and boost pressure control turned off in case of fault.
Cruise control switched off.

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:
EGR Feedback Signal
Activate:
EGR Solenoid
(See also description of readings/activations in diagnostic tool)