Trouble Shooting: Notes
MALFUNCTION DIAGNOSTIC CODES
| Trouble Code/No. of Flashes | Malfunctioning Component |
|---|---|
| 1 | No system malfunction |
| 2 | Throttle valve switch |
| 3 | Coolant temperature sensor |
| 4 | Airflow sensor position indicator |
| 5 | Oxygen sensor |
| 6 | Not used |
| 7 | TD signal |
| 8 | Altitude correction capsule |
| 9 | Electro-Hydraulic Actuator (EHA) |
| 10 | Throttle valve switch |
| 10 | Idle speed contact |
| 11 | Not used |
| 12 | EGR temperature sensor (California 420 & 560 series only) |