PSG16 / P0403 02
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 not working.
EGR Valve PWM Signal Circuit. Short to Ground.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Performance loss.
Cruise control not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| Output short circuit to ground 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:
| (See also description of readings/activations in diagnostic tool) |
