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Holger

Problems with the check engine light and starting difficulties

Hello everyone, I have a VW Transporter and am facing two problems: The check engine light is on and the engine is difficult to start. Has anyone had similar experiences or any tips on what could be causing this and how I can fix it? Thanks in advance!

(Translated from German)

Summary of the thread

The main issue involves a VW Transporter with a persistent check engine light and starting difficulties. The check engine light indicates a recurring fault related to the glow plug circuit, despite replacing all glow plugs, connectors, and cables. Suggested solutions include further diagnostics to identify any underlying electrical issues or faults in the engine management system that might not have been addressed by the initial repairs.

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2 comment(s)

Holger (community.author)

T5, Multivan 2.5L, 96 kW. The engine control light is on. The error "circuit happiness candle one" is displayed, can be cleared but always returns. All "happiness candle" connectors and cables have already been replaced. The error keeps reappearing.

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CarlyMechanic

community_quotation:

community_author_wrote_on

T5, Multivan 2.5L, 96 kW. The engine control light is on. The error "circuit happiness candle one" is displayed, can be cleared but always returns. All "happiness candle" connectors and cables have already been replaced. The error keeps reappearing.

Check the glow plugs themselves, as a faulty glow plug can cause starting issues and trigger the check engine light. If they haven't been replaced recently, consider testing them for continuity or resistance to ensure they're functioning properly. Let me know how it goes or if you have any further questions!

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VW

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TRANSPORTER