Espar / Eberspacher Airtronic D2 / D4 (classic generation) error code 010
Overvoltage cutoff (>16V 12V / >32V 24V sustained 20+ s)
What to check, and in what order, is in the app. The flow Diesel Forced-Air Heater — entry diagnostic (Espar / Webasto / Autoterm / Chinese) 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.
Start free trial 14 days free, no card neededDocumented in
- Espar Airtronic D2/D4 Diagnostic & Repair Manual + butlertechnik D2/D4 fault-code sheetsEberspacher/Espar
- Espar Airtronic D2 Fault Codes (butlertechnik sheet)Eberspacher/Espar
- Espar Airtronic D4 Fault Codes (butlertechnik sheet)Eberspacher/Espar
- HEATSO — Fault Codes for Espar D2 & D4 Heaters