The P2302 engine code signals an issue with your ignition coil “A.” Your ignition coil might have a bad electrical connection or you might need a new ignition coil altogether.

Diagnostic trouble codes (DTCs) tell you what’s going on in your engine. Using an OBD-II reader to read DTCs when your

check engine light goes on

can help you keep your car well-maintained. It can also save you some of the time and money spent at a mechanic.

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What does the engine code P2302 mean?

Definition: Ignition coil “A” secondary circuit

The P2302 engine code signals a faulty ignition coil or ignition coil electrical connection.

Ignition coils are some of the major players in helping your car run. They multiply volts from your car in order to ignite your engine’s air-fuel mixture.

How much will it cost to fix it?

Expect to pay around $250 to $400 to fix the P2302 engine code.

The price for an ignition coil is approximately $150 to $225. If you need to

replace your ignition coil

, expect to pay at least this much. If you aren’t doing the labor yourself, you will need to pay more for a mechanic’s labor—which will run you an additional $50 to $100.

Remember, these costs are estimates, and the cost will ultimately depend on the cost of parts and your mechanic’s costs for labor.

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What can cause the engine code P2302?

Here are some of the main causes of the P2302 engine code:

Faulty ignition coil “A”

Shorted or open ignition coil “A” harness

Poor electrical connection to ignition coil “A” circuit

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Common symptoms of the P2302 engine code

Even without an OBD-II reader, your car might be telling you that there’s something wrong with your ignition coil “A.” Here are some of the major symptoms for the P2302 engine code:

Check engine light turns on

Rough engine idle

Engine misfires

Loss of engine power

Car won’t start

How serious is the P2302 engine code?

The P2302 engine code is urgent and should be fixed immediately.

Ignition coils are vital in the operation of your engine—and a faulty ignition coil could ultimately mean your car won’t run. At best, your engine performance will suffer. Leaving this engine code unfixed can put a serious strain on your vehicle and your car’s value could depreciate drastically.

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Can I fix the P2302 engine code myself?

If you’re in the business of trying to save money on your car, you might be wondering how easy fixing this engine code can be. While fixing the P2302 engine code is not for the faint of heart, we’ll walk you through the steps so you can take a jab at it.

First, you will need to inspect the wiring harness and connectors around your car’s ignition coil “A” and assess if any parts are damaged, bent, worn, or corroded.

You might find you need to replace your ignition coil entirely. Here are the steps for replacing your car’s ignition coil:

Disconnect your car’s battery

Find the ignition coils

Disconnect faulty ignition coil

Remove the faulty ignition coil

Install new ignition coil

Reconnect battery

Run car to test the new ignition coil