DB1 - Continuous Memory Code 327: Verify Condition

Continuous Memory Diagnostic Trouble Code (DTC) 327 indicates that sometime in the last 80 warm-up cycles, the EGR Temperature (EGRT) sensor signal was less than the Self-Test minimum.

Possible Causes:

- Damaged EGRT sensor.

- EGRT circuit shorted to ground.

- Damaged Powertrain Control Module (PCM).

- Key "OFF".

- Clear continuous memory. Clearing Diagnostic Trouble Codes

- Start engine and run for at least two minutes.

- Turn engine "OFF" and rerun Key On Engine Off (KOEO) Self-Test.

- Is Continuous Memory DTC 327 still present?

Yes -- Go to DB2. DB2 - Induce Opposite Code

No -- Go to DB90. DB90 - Check EEC-IV Vehicle Harness