What Does Engine Code P2308 Mean?
If your car is showing engine code P2308, it means that ignition coil C is not receiving the voltage it needs. This may cause problems for your engine.
Written by Sean Boehme
Reviewed by Melanie Reiff
If your car is showing engine code P2308, it means that the ignition coil designated “C” is not receiving the proper voltage. There may be a problem with the ignition coil itself or it may be caused by other malfunctioning parts, like the spark plug.
If you are having car trouble, using an OBD-II code reader is a great way to focus on the issue. With that said, finding a specific diagnostic trouble code (DTC) is only useful if you can figure out how to address the problem.
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What does engine code P2308 mean?
Definition: Ignition coil ‘C’ secondary circuit
If your OBD-II code reader is showing engine code P2308, that means that your Powertrain Control Module (PCM), essentially the electrical brains of your car, has detected an issue with the voltage reaching one of your ignition coils. For this code, it’s a problem with ignition coil C.
Your car’s ignition coils take power from your battery and create the voltage needed to create a spark and ignite the fuel. If an ignition coil is not receiving power properly, it can mean that there will be problems both starting and running your engine.
How much will it cost to fix?
How much it costs to fix engine code P2308 depends on what's causing the problem. If the ignition coil is faulty, a new one will probably land somewhere under $100. The cost of labor to replace it, however, can easily double if not triple the expense.
What can cause the P2308 engine code?
If you are seeing the P2308 engine code, that means there is something wrong with the amount of voltage that ignition coil C is receiving. This can happen for several reasons including:
- The coil itself is faulty
- The coil’s harness is open or shorted
- The coil is poorly connected
There is also the possibility that the engine code isn’t caused by the coil itself. If this is the case, a problem with the car’s
spark plug
or with the PCM may be the culprit.Common symptoms of the P2308 engine code
If there is a problem with voltage making its way to your car’s ignition coil C, you can expect to find the
Check Engine Light illuminated
. Other possible symptoms of the problem include:In general, any problems you are having with your engine’s performance and startup could be related to engine code P2308.
How serious is the P2308 engine code?
Your car should remain drivable despite whatever issue is causing engine code P2308. With that said, you still want to get it fixed right away.
Electrical problems are not something you ever want to mess with, and it’s always possible that the issue with your ignition coil could be a part of a larger problem. By addressing the issue right away, you’ll be able to enjoy some peace of mind the next time you’re on the road.
Can I fix engine code P2308 myself?
The more common causes of engine code P2308 can be fixed yourself, given you have the proper tools and understanding to get it done. If you simply need to
replace the ignition coil
or the spark plug, it should only take a few hours.However, the important thing to remember about engine code P2308 is that you need to evaluate a lot of different things to diagnose it. That means:
- Checking to make sure ignition coil C is working
- Ensuring the spark plug is not worn out
- Looking for any frayed wires near the spark plug or ignition coil
If none of these seem like the root of the problem, the issue may be with your PCM. If there is any trouble diagnosing the issue, it may be best to take the safe route and
take your car to a mechanic
so that a professional can look at it.Finding insurance for your vehicle
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