9 Proheat diagnostic codes on file. Each shows the symptom for free — unlock the full diagnosis, repair steps, and field insights with a free account.
| Code | System | Symptom | Fix |
|---|---|---|---|
| Err 01 | — | No Start | Unlock |
| Err 02 | — | Flame Out | Unlock |
| Err 03 | — | Low Voltage | Unlock |
| Err 04 | — | Overheat | Unlock |
| Err 05 | — | Over-Voltage | Unlock |
| Err 06 | — | Fuel Pump | Unlock |
| Err 07 | — | Coolant Pump | Unlock |
| Err 08 | — | Combustion Fan | Unlock |
| Err 09 | — | Glow Plug | Unlock |
AM Fleet Integrity gives you QR-code operator reporting, preventive maintenance scheduling, and predictive alerts in one place. Start your 14-day free trial — no credit card required.
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