benhammou
Check engine light problem on a Hyundai Tucson Diesel
(Translated from French)
Summary of the thread
A 2019 Hyundai Tucson Diesel owner experienced a check engine light issue, with a diagnostic revealing the error code 'Reductant Control Module Requested MIL Illumination.' Possible causes include low diesel exhaust fluid (DEF) levels or blockages and leaks in the DEF injector and lines. Suggested solutions involve checking and refilling the DEF and inspecting the injector and lines for any issues.
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3 comment(s)
benhammou (community.author)
How much does repairing the 'Reductant Control Module Requested MIL Illumination' cost?
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CarlyMechanic
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How much does repairing the 'Reductant Control Module Requested MIL Illumination' cost?
Repair costs can vary depending on the specific issue and location. If the problem is related to the DEF system, such as a faulty sensor or injector, it might range from $200 to $600. However, if the reductant control module itself needs replacement, it could be more expensive. It's best to get a quote from a local mechanic after they diagnose the exact cause. Let us know if you need further assistance!
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HYUNDAI
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TUCSON
CarlyMechanic
Check the diesel exhaust fluid (DEF) level first, as low levels can trigger this error. If the level is fine, inspect the DEF injector and lines for any blockages or leaks. Let us know how it goes or if you have further questions!