What is the E01 fault in diesel heaters?
2 Answers
E01 fault in Dewolf diesel heaters is caused by a damaged control circuit. It is a vehicle's parking heater, and the flashing indicator light indicates an issue with its control circuit, which can lead to operational failure of the heater. In such cases, it is necessary to promptly send the vehicle to a repair shop for inspection and maintenance. Precautions for using vehicle heaters: After using a vehicle heater, the engine gets preheated, which can significantly reduce engine wear. Starting a car at very low temperatures can cause considerable damage to the engine, so preheating with a vehicle heater can effectively minimize wear. Functions of vehicle heaters: Installing a vehicle heater is highly beneficial for car maintenance and also contributes to environmental protection. In fact, vehicle heaters offer many advantages, not just in cold regions. Even in summer, vehicle heaters can still play a significant role.
Last time I drove to Northeast China for delivery, I encountered the E01 fault. It was minus twenty degrees Celsius, and the diesel heater suddenly displayed E01 and stopped working. Actually, it was because the ignition system of the diesel heater wasn’t functioning properly, commonly due to carbon buildup on the ignition plug or poor fuel flow. I was freezing, so I troubleshooted it myself—first checking if the fuel pump’s supply pressure was sufficient, then seeing if the fuel injector was clogged. I found that the fuel filter hadn’t been replaced for too long, causing too much debris and poor fuel atomization, which prevented ignition. Another possible issue is the air intake being blocked by ice and snow, leading to insufficient air—warming the intake pipe with a hot towel solved it. Finally, if the circuit board is short-circuited due to moisture, a professional inspection at the repair shop is needed to confirm.
