Parts for your 2013 Honda Accord-Ignition coils

2013 Honda Accord Ignition Coils — Purpose, Care, and When to Replace

Per Honda’s 2013 Accord Factory Service Manual (Ignition System) and the Honda electronic parts catalogue for AU/NZ models, every petrol 2013 Accord uses individual coil-on-plug ignition coils—four on the 2.4L four-cylinder and six on the 3.5L V6. This matches industry guidance from ignition specialists (e.g., NGK/NTK technical notes) on modern coil-on-plug systems. So yes, ignition coils are fitted and very relevant on the 2013 Honda Accord.

On this model, each cylinder gets its own coil sitting directly over the spark plug. The coil’s job is to step up battery voltage to the big spark needed to ignite the air–fuel mix. When a coil weakens or fails, the engine may misfire, idle roughly, feel flat under load, or switch on the check engine light. Left too long, persistent misfires can overheat and damage the catalytic converter, so it’s worth sorting early.

While coils aren’t a scheduled “every X kilometres” replacement item, they do benefit from inspection during servicing—especially when the spark plugs are due. Honda specifies long-life iridium plugs, typically replaced around 160,000 km under normal conditions. When the plugs are out, it’s the perfect time to check each coil’s boots for cracking or carbon tracking, confirm snug electrical connectors, and keep moisture and dirt out of the plug tubes.

Common signs a 2013 Accord coil needs attention include:

• Check engine light with misfire codes (e.g., P0301–P0306) or coil circuit codes (P0351–P0356)
• Rough idle, hesitation, or poor fuel economy
• Noticeable lack of power, especially uphill or when overtaking
• Raw fuel smell from the exhaust after a misfire event

Replacement is straightforward for most home tinkerers: disconnect the battery, remove the engine cover, unplug the coil connector, undo the small hold-down bolt, and pull the coil straight up. Fit quality coils, lightly apply dielectric grease to the plug boot, and make sure the connectors click home. On the V6, rear-bank access is tighter, so patience (and the right tools) helps.

A practical approach is to replace only the failed coil, though on higher-kilometre cars some owners choose to do a bank or full set for peace of mind—especially if multiple coils test weak or misfires hop between cylinders. Always pair fresh coils with healthy plugs, a tired plug can make even a new coil look bad under load.

How many ignition coils does a 2013 Honda Accord have?

Petrol models use a coil-on-plug setup: four coils on the 2.4L four-cylinder and six coils on the 3.5L V6. Each cylinder has its own coil for precise spark control and reliability.

Do the coils need replacing as a full set?

Not necessarily. Many workshops replace only the faulty coil once confirmed by diagnostics. That said, if the vehicle has high kilometres or multiple misfires across different cylinders, replacing a bank or the full set can save repeat visits.

Is it safe to keep driving with a misfiring coil?

It’s best not to. Driving with a misfire can overheat the catalytic converter and waste fuel. If the check engine light flashes, ease off and have it checked promptly to avoid costly damage.