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The VW error code 05658 signals an issue with one of the diesel engine's glow plugs, specifically related to the one for cylinder 1. When a glow plug fails to heat up the engine's cylinder head during a cold start, the 05658 code may appear. Symptoms of faulty glow plugs in a VW include difficulty starting, engine misfires from inadequate compression and injection pressure, emission of white or black smoke from the exhaust, decreased fuel efficiency, and rough idling. The typical cost for replacing a Volkswagen glow plug falls between $270 and $315 for both parts and labor.
The Volkswagen error code 05658 signifies a malfunction with the glow plug.