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P2330 OBD-II Trouble Code: Ignition Coil K Primary Control Circuit Low

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Diagnostic Trouble Code (DTC): P2330

P2330 code definition

When the PCM of a vehicle logs a P2330 trouble code, it’s because there is a problem with a primary or secondary circuit and the way its interacting with an ignition coil – in this case, ignition coil K.

What the P2330 code means

Almost every modern automobile uses a “coil on plug” system to create the spark required for bringing an engine to life. In fact, it’s probably fair to say that any vehicle advanced enough to have a PCM (Powertrain Control Module) also has a coil on plug system working for it.

There are usually over 30 coils per vehicle which is why there are 35 trouble codes related to their operation. A lot of times, if you find P2330 has been logged, you’ll notice a number of others related to these coils have too. Whatever the case, this code means something is wrong with ignition coil K’s circuitry.

You can find these ignition coils on the top of a vehicle’s ignition plug. They’re powered by electricity controlled by the PCM. This electricity is also how these coils create the igniting spark we mentioned earlier. However, before that happens, a voltage signal must be received by the PCM from an ignition coil.

Each vehicle has an acceptable range of voltage for this job. If the voltage that the PCM receives from ignition coil K is too low, then P2330 will be recorded.

What causes the P2330 code?

Sometimes, this trouble code is marked down in the system despite the fact that nothing is actually wrong. In that case, it’s the PCM that is responsible. That’s pretty rare, though.

More often than not, it will be one of the following:

  • Ignition coil K’s wiring is frayed, broken or has shorted
  • Ignition coil K’s connected is damaged and thus only delivering low readings
  • Ignition coil K is broken
  • The fuel injector has malfunctioned and is no longer working correctly (or at all)
  • One of the spark plugs isn’t working correctly

What are the symptoms of the P2330 code?

If ignition coil K quits working properly, the check engine light should come on. Other symptoms a driver may experience would be:

  • The PCM records misfiring codes
  • The PCM stores camshaft sensor codes
  • The PCM stores crankshaft sensor codes
  • The vehicle struggles to accelerate
  • The engine misfires even when it’s in idle
  • The engine simply doesn’t perform up to par

How does a mechanic diagnose the P2330 code?

To diagnose the problem, a mechanic will need to:

  • Use an OBD-II scanner to find out which does have been recorded by the PCM
  • Check for signs that ignition coil K is damaged beyond repair
  • Check for signs of bad wiring or connectors

Common mistakes when diagnosing the P2330 code

A very common mistake when addressing this trouble code is simply applying a tune-up to take care of the problem. That’s not to say this is a bad idea simply for the sake of maintenance, but it’s rarely the solution in and of itself.

How serious is the P2330 code?

Until the underlying problems are addressed, you will most likely have a very difficult time operating your vehicle. Though it may not be dangerous necessarily, drivability will be affected which is never something to take lightly.

What repairs can fix the P2330 code?

Replacing or repairing any of the following may be necessary to clear this code:

In some cases, it may even be necessary to replace or rebuild the entire engine.

Additional comments for consideration regarding the P2330 code

Sometimes, wildlife is the cause behind an ignition coil becoming damaged and, thus, triggering a P2330 code or a related one. If that’s the case, you’ll want to be careful about where you park, especially during the winter. Those of you who live in a cold climate may have a car that attracts wildlife because it’s so warm under the hood shortly after it’s been driven.

Need help with a P2330 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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