How to Replace Spark Plugs — 2018-2025 Honda Accord

Replacing spark plugs on your 2018-2025 Honda Accord is a key maintenance task to ensure smooth engine performance, prevent misfires, and improve fuel efficiency, typically needed every 60,000-100,000 miles depending on the plug type. This DIY repair can save you significant labor costs, with parts costing $30-$60 compared to a shop charge of $150-$250. With the right tools and this guide, most DIYers can tackle this job confidently in under two hours. DIY Cost: $30-$60 | 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.