DD10 - Attempt to Generate DTC 327

Diagnostic Trouble Code (DTC) 337 indicates the EGR Position (EGRP) sensor signal is greater than the Self-Test maximum.

Possible causes:

- Open in EGRP sensor SIG circuit.

- Short to power in EGRP sensor SIG circuit.

- Damaged Powertrain Control Module (PCM).

- Damaged EGRP sensor/EGR valve assembly. Damaged EGR Vacuum (EGRV) solenoid valve.

- Improper EGR valve vacuum hose routing.

- Key "OFF".

- Disconnect EGRP sensor.

- Connect a jumper wire between the EGRP sensor SIG and SIG RTN circuits at the EGRP sensor vehicle harness connector.

- Rerun Key On Engine Off (KOEO) and Key On Engine Running (KOER) Self-Test. Quick Test Appendix (Detailed Testing Instructions)

- Is DTC 327 present (ignore all other DTCs)?

Yes -- Remove the jumper wire. Go to DD13. DD13 - Check For Vacuum at EGRV Solenoid Valve Output Port

No -- Reconnect EGRP sensor. Remove the jumper wire. Go to DD11. DD11 - Check Continuity of EGRP Sensor SIG Circuit