Quick Test 4.0 - Continuous Memory Codes

Continuous DTCs are concerns that were detected during normal vehicle operation. These codes are retained for 40 warm-up cycles.

Some special considerations for continuous DTC testing include the following:
- The cause of some continuous DTCs may have been eliminated if KOEO/KOER DTCs were repaired. Always retest and repair any DTCs that still remain.
- If DTCs are present, refer to the Diagnostic Trouble Code Chart for repair information. Erase DTC, perform the Transmission Drive Cycle Test and repeat all Quick Test procedures after completing repair on the DTCs.
- If the Continuous Test passes (P1111) and a concern is still present, refer to the Diagnosis by Symptom Index. Also, refer to TSBs for concern diagnosis.

Performing Continuous DTC Tests:
- Select VEHICLE AND ENGINE SELECTION menu.
- Select year, engine, model with the appropriate qualifier if needed, for example, transmission or 49-state/Cal.
- Select DIAGNOSTIC DATA LINK menu.
- Select DIAGNOSTIC TEST MODE menu.
- Select RETRIEVE CONTINUOUS CODES.
- Follow operating instructions from the NGS menu screen.
- Record all DTCs displayed.
- Clear DTCs.
- Perform Transmission Drive Cycle Test.
- Rerun Continuous DTC Test. If DTCs have returned, repair as required. Road test and rerun all DTC test procedures.