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karenbeck53

Avantime Diesel Fuel Injection Issue

My 2003 Renault Avantime diesel's engine is running rough, and the check engine light is on. The error relates to 'reset quantity drift compensation', pointing to a fuel injection issue. Could a defective injection valve or injector be the cause? I'm worried about fuel economy!

Summary of the thread

A 2003 Renault Avantime diesel is experiencing rough engine performance and a check engine light, indicating a fuel injection issue related to 'reset quantity drift compensation.' This problem could be caused by a defective injection valve or injector. Suggested solutions include using injector cleaning solutions and checking compensation adjustment values, though these typically require specialized equipment or professional assistance. Ultimately, the vehicle owner decided to have the injectors assessed and replaced by a workshop.

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4 comment(s)

heinz_schwarz1

The symptoms and error code strongly suggest a fuel injection problem. The drift compensation refers to ECU adjustments for injector performance variations. Before replacing injectors, have you tried injector cleaning solutions? Have the compensation adjustment values been checked? Sometimes resetting them helps.

karenbeck53 (community.author)

I haven't tried cleaning solutions, as I didn't want to make things worse. How do I check the compensation adjustment values? Can I do it with a standard OBD2 scanner, or do I need special equipment?

heinz_schwarz1

Some advanced OBD2 scanners might offer limited injector data access, but resetting drift compensation values typically requires Renault-specific software or a professional-grade scan tool. Given the risks, I'd advise getting help from a workshop experienced with Renault diesel engines. They have the tools to assess the injectors and perform compensation adjustments.

karenbeck53 (community.author)

I've booked an appointment with a local workshop. They confirmed the injector issue and replacement, costing around 515€. Hopefully, this will resolve the problem. Thanks for the advice!

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RENAULT

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AVANTIME