Parts for your 2012 Honda Cr-v-Ignition coils

2012 Honda CR‑V ignition coils — what they do and how to look after them

Ignition coils are absolutely fitted and relevant to the 2012 Honda CR‑V petrol models. Honda’s 2012 CR‑V workshop/service information and the Honda Electronic Parts Catalogue specify a coil‑on‑plug setup with one coil per cylinder on the 2.4‑litre K‑series and 2.0‑litre R‑series engines. That means four individual coils sit under the bonnet, directly on the spark plugs. Note: diesel variants (where offered in some markets) don’t use ignition coils because diesel engines ignite fuel by compression rather than spark.

On a 2012 CR‑V petrol, each ignition coil transforms the 12‑volt battery feed into a high‑voltage spark right at the plug. Coil‑on‑plug (COP) design reduces energy loss, cleans up the engine bay, and improves cold starts and emissions. When a coil weakens, drivers typically notice a rough idle, a flashing or steady check‑engine light, sluggish acceleration, or higher fuel use — often with misfire codes like P0301–P0304 logged by the ECU.

Ignition coils aren’t a scheduled replacement item, they’re serviced on condition. As part of regular servicing, it’s smart to inspect the coil connectors for corrosion, check the loom for chafing, and make sure the coil boots are clean and dry. Replacing spark plugs at the correct interval (often around 160,000 km for iridium plugs — always confirm in the owner’s manual for local spec) helps protect the coils from overworking. If a misfire points to a single cylinder, many technicians will swap that coil to another cylinder to confirm the fault before replacing it.

• When replacing: use quality OEM or equivalent coils, keep the mating surfaces clean, and seat the boot firmly on the spark plug.
• Coil hold‑down bolts are lightly torqued — avoid over‑tightening.
• If the vehicle has high kilometres and multiple intermittent misfires, replacing all four coils can be cost‑effective, but it’s not mandatory.

DIYers will find access straightforward under the engine cover with basic tools. Disconnect the battery, unplug the coil connectors, lift each coil, and refit carefully. If misfires persist after new plugs and a known‑good coil, further diagnosis (fuel injector balance, intake leaks, compression) is wise. For everyday Aussie and Kiwi motoring, keeping plugs fresh and moisture out of the plug wells goes a long way to keeping those coils happy.

FAQs

How many ignition coils does a 2012 Honda CR‑V have?
The petrol 2012 CR‑V uses four coil‑on‑plug units — one for each cylinder. They sit directly on top of the spark plugs beneath the engine cover.

When should the ignition coils be replaced?
There’s no fixed kilometre interval. Coils are replaced when they cause misfires, rough running, or trigger fault codes. Keeping iridium plugs on schedule helps coils last longer.

Do replacement coils need programming?
No. The CR‑V’s coil‑on‑plug units are plug‑and‑play. Fit quality parts, ensure clean connections, and clear any stored fault codes after repair.