Espar / Eberspacher Airtronic D2 / D4 (classic generation) error code 017
Hardware overheating threshold exceeded (control box locked)
What to check, and in what order, is in the app. The flow Diesel Air Heater — Overheat Shutdown walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Espar Airtronic D2 Fault Codes (butlertechnik sheet)Eberspacher/Espar
- Espar Airtronic D4 Fault Codes (butlertechnik sheet)Eberspacher/Espar
- Espar Airtronic D2/D4 Diagnostic & Repair Manual + butlertechnik D2/D4 fault-code sheetsEberspacher/Espar
- HEATSO — Fault Codes for Espar D2 & D4 Heaters
Related codes
- 010Overvoltage cutoff (>16V 12V / >32V 24V sustained 20+ s)
- 011Undervoltage cut-off - supply below the minimum for 20+ seconds…
- 012Overheating at overheating sensor
- 013Overheating at flame sensor
- 020Glow plug interruption (open circuit)
- 047Metering pump short circuit or overload
- 048Metering pump interruption (open circuit)
- 050Operating lock-out — too many failed start attempts