Fault code No. | 24 |
Symptom | The O2 sensor does not operate. |
Fail-safe action | Engine startup: Possible |
Riding: Possible | |
Diagnostic monitoring code No. | |
Meter display | |
Checking method |
Item/components and probable cause | Check or maintenance job | Sensor inspection procedure | |
1 | O2 sensor installation status | Check the sensor for a loose mounting or a pinch | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
2 | Connection of O2 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 repair/replace the wire harness. | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
3 | 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 repair/replace the wire harness. | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
4 | Continuity of wire harness | Open or short circuit → Connect it securely, or repair/replace the wire harness. Black/Blue-Black/Blue Pink/Black-Pink/Black Red/Blue-Red/Blue Gray/Green-G ray/G reen | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
5 | Check the fuel pressure. | Refer to "Checking the fuel pressure". | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
6 | O2 sensor malfunction | Check the O2 sensor for an abnormality. Refer to "Engine removal". O2 sensor malfunction → Replace the O2 sensor | Either start and warm up the engine, and then racing it, or reset it with diagnostic code 63. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
7 | ECU malfunction | Replace the ECU. |