P128A

DTC P128A: Valve Pause System (VPS) Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1289 or P2651 indicated?

YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 4.

4. Turn the ignition switch OFF.
5. Check the engine oil level.

Is the level OK?

YES - Go to step 6.

NO - Adjust the engine oil to the proper level, then go to step 11.

6. Turn the ignition switch ON (II).
7. Clear the DTC with the HDS.
8. Do the VTEC TEST in the INSPECTION MENU with the HDS.

Is the result OK?

YES - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at rocker arm oil control solenoid 1, rocker arm oil control solenoid 2, the rocker arm oil pressure switch, the EOP sensor, and the PCM.

NO - Depending on the result, replace the appropriate part, then go to step 9:

- ENGINE OIL PRESSURE SENSOR HIGH VOLTAGE: EOP sensor
- ROCKER ARM OIL CONTROL SOLENOID 1 STUCK OFF: Rocker arm oil control valve

9. Turn the ignition switch OFF.
10. Reconnect all connectors.
11. Turn the ignition switch ON (II).
12. Reset the PCM with the HDS.
13. Do the PCM idle learn procedure.
14. Do the VTEC TEST in the INSPECTION MENU with the HDS.
15. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P128A is indicated, check for poor connections or loose terminals at rocker arm oil control solenoid 1, rocker arm oil control solenoid 2, the rocker arm oil pressure switch, the EOP sensor, and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Go to step 16.

16. Monitor the OBD STATUS for DTC P128A in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at rocker arm oil control solenoid 1, rocker arm oil control solenoid 2, the rocker arm oil pressure switch, the EOP sensor, and the PCM, then go to step 1. If the screen indicates EXECUTING, keep testing until a result comes on. If the screen indicates OUT OF CONDITION, go to step 14 and recheck.