Error codes › Diesel Air Heaters › Eberspacher EasyStart Pro control unit (controller display - not a heater code) › 9
Eberspacher EasyStart Pro control unit (controller display - not a heater code) error code 9
CAN communication error - communication error on the CAN bus link between control unit and heater (control-unit message). The Airtronic 2 heater logs its own P000307 (081) 'CAN communication error in control unit'.
What to check, and in what order, is in the app. The flow Eberspacher EasyStart Pro - what the controller is showing (control-unit codes 1-9 + heater messages) 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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- Eberspacher EasyStart Pro Operating Instructions 22.1000.35.2204.0A (EN, 07.2021)Eberspacher Climate Control Systems GmbH
- Eberspacher Repair instructions Airtronic 2 - S2 D2L Fault Codes and Diagnosis 25.2720.95.2682.0D (02.2020)Eberspacher (via butlertechnik)