Caterpillar 3406E troubleshooting: 12 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Caterpillar 3406E — full specs, parts & maintenance.
| Code | Meaning | Remedy |
|---|---|---|
| i01226491 | Engine overspeed | Stop the engine by shutting off the fuel supply to the engine and/or shutting off the air supply to the engine. |
| 21 | Fault shutdown | |
| 22 | Fault alarm | |
| 105-11 | Very High Intake Manifold Air Temperature | |
| 110-11 | Very High Coolant Temperature | |
| 111-11 | Very Low Coolant Level | |
| 84-00 | Vehicle Overspeed Warning | |
| 84-14 | Quick Stop Occurrence | |
| 190-00 | Engine Overspeed Warning | |
| 3111 | 0 | |
| 100-11 | Very Low Oil Pressure | |
| 55 | Diagnostic Code 55 |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.