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alinaphoenix91

Skoda Praktik auxiliary heater problem

My Skoda Praktik from with a diesel engine is showing an error with the auxiliary heater. The parking heater cannot be activated. VCDS scan shows an error stored in the error memory. I suspect it might be a defective glow plug. Has anyone experienced this?

Summary of the thread

A Skoda Praktik with a diesel engine had an issue with the auxiliary heater, which couldn't be activated, and a VCDS scan revealed an error. The initial suspicion was a defective glow plug. After ruling out coolant leaks and blower motor issues, it was confirmed that the glow plug was indeed the problem. Replacing the glow plug resolved the issue, restoring the auxiliary heater's functionality.

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4 comment(s)

marahartmann1

I had a similar issue with my Praktik's auxiliary heater. Check for coolant leaks around the heating system. A drop in coolant level can prevent the heater from firing up. Is the blower motor functioning correctly? A faulty blower can also trigger a fault.

alinaphoenix91 (community.author)

Coolant level seems stable, no visible leaks. The blower motor is working fine, pushing air when the regular car heater is on. You mentioned a coolant leak preventing the heater from starting. Is there a specific sensor or component that detects low coolant for the auxiliary heater?

marahartmann1

Yes, there is a coolant sensor integrated into the auxiliary heater system. However, since you've ruled out a coolant leak and the blower motor is operational, a defective glow plug is the most probable cause, as you suspected. I'd recommend getting it checked at a workshop. It's often difficult to access the heater and replace the plug without proper tools.

alinaphoenix91 (community.author)

Fault code indicated the glow plug. After replacing it, the auxiliary heater is working. The total cost was 440€ including labor.

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SKODA

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PRAKTIK