E3 code diesel heater, how to check the glow plug with a multimeter

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If you’re having issues with your Chinese diesel heater and you want to see if your glow plug is faulty then you can do so with a multi meter.

Select ohms on the multimeter and set it to 200 to test the glow plug, make sure you check the voltage on your leisure batteries as well Incase you’re below 12.5v, sometimes low voltage can cause an E3 code. Let me know how you fixed your E3 code!

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