DTC Troubleshooting

DTC P1289: Rocker Arm Oil Pressure Sensor Stuck High

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

1. Turn the ignition switch OFF.
2. Check the engine oil level.

Is the level OK?

YES - Go to step 3.

NO - Adjust the engine oil to the proper level, then go to step 8.

3. Turn the ignition switch ON (II).
4. Clear the DTC with the HDS.
5. 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 rocker arm oil pressure sensor, and the PCM

NO - Go to step 6.

6. Turn the ignition switch OFF.
7. Replace the rocker arm oil pressure sensor.
8. Turn the ignition switch ON (II).
9. Reset the PCM with the HDS.
10. Do the PCM idle learn procedure.
11. Do the VTEC TEST in the INSPECTION MENU with the HDS.
12. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1289 indicated?

YES - 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 rocker arm oil pressure sensor, and the PCM, then go to step 1.

NO - Go to step 13.

13. Monitor the OBD STATUS for DTC P1289 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 12, go to the indicated DTCs troubleshooting.

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 rocker arm oil pressure 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 11.