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Top 11 Causes of the Subaru Check Engine Light (+ Next Steps)

RepairSmith

Moreover, since the ECM can’t perform proper diagnostic tests due to low voltage, it may trigger the Check Engine Light. Weak Battery A weak battery won’t provide enough voltage, leading to dim lights, erratic radio behavior, and other electrical issues.

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Ram Check Engine Light: 8 Key Triggers + Can You Drive with It?

RepairSmith

A Ram Check Engine Light diagnostic test, whether for a Ram 2500, 1500, or any other Ram chassis cab, can run between $88 and $209, depending on your truck’s model, manufacturing year, and labor charges. Pro tip: Part replacements are common in older or certified pre-owned vehicles.