| Fault code No. | 23 |
| Symptom | Open or short circuit of atmospheric pressure sensor lead |
| Fail-safe action | Engine startup: Possible |
| Riding: Possible | |
| Diagnostic monitoring code No. | D:02 |
| Meter display | Displays the atmospheric pressure. |
| Checking method | Compare the actually measured atmospheric pressure with the meter display value. |
| Item/components and probable cause | Check or maintenance job | Sensor inspection procedure | |
| 1 | Connection of atmospheric pressure sensor coupler. Check the connection of the coupler is secure. Remove the coupler, and check each pin (for bending, wear, or locking). | Poor connection → Connect it securely, or replace the wire harness. | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 2 | Connection of main harness ECU coupler. Check the connection of the coupler is secure. Remove the coupler and check each pin (for bending, wear, or locking). | Poor connection → Connect it securely, or replace the wire harness. | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 3 | Continuity of wire harness | Open or short circuit → Replace the wire harness. Black/Blue-Black/Blue Pink-Pink Blue-Blue | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 4 | Atmospheric pressure sensor malfunction | Check in the diagnostic mode (Code No. 02). Atmospheric pressure at the current altitude and weather conditions is indicated. 0 m above sea level: Approx. 101 kPa 1000 m above sea level: Approx. 90 kPa 2000 m above sea level: Approx. 80 kPa 3000 m above sea level: Approx. 70 kPa Incorrect indication → Sensor malfunction → Replace the atmospheric pressure sensor. Sensor inspection procedure. Refer to "Checking the atmospheric pressure sensor". | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 5 | ECU malfunction | Replace the ECU. |