How to Replace Spark Plugs — 2019-2023 Jeep Cherokee

Replacing spark plugs on your 2019-2023 Jeep Cherokee is a key maintenance task to ensure smooth engine performance, prevent misfires, and improve fuel efficiency, especially if you’re noticing rough idling or reduced power. This DIY repair can save you significant money, costing around $40-$80 for parts compared to $150-$250 at a shop. With the right tools and this guide, most DIYers can tackle this job confidently in a couple of hours. DIY Cost: $40-$80 | Shop Cost: $150-$250

You’re done. Clear any stored codes with your scanner and complete a normal drive cycle so the vehicle’s readiness monitors reset.

If the code returns, the root cause likely wasn’t the part you replaced — go back through the diagnostic steps before swapping anything else.