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  • The P0200 code stands for “Injector Circuit/Open.” It’s set when there’s a problem in the fuel injector circuit’s performance.
  • A defective fuel injector, PCM issues, and circuit problems could trigger the code.
  • Some signs of this trouble code include an active check engine light, engine misfires, rough running, poor engine performance, and reduced fuel economy.

On-board diagnostic (OBD) codes help mechanics and vehicle owners identify possible issues in a vehicle. But before you can troubleshoot and resolve these problems, it’s important to know what these codes mean.

Code P0200 is one of many trouble codes that may be logged and retrieved from the OBD system. Here is some basic information that may help you understand what getting this code may mean for your vehicle.

What Does the P0200 Code Mean?

Diagnostic trouble code (DTC) P0200 stands for “Injector Circuit/Open.” This code is logged when the powertrain control module (PCM) detects a possible problem in the operation of the fuel injector circuit. This error code refers to a condition where there is too high or too low voltage or a resistance drop at the injectors. Usually, a P020[X] code will correspond to a cylinder (e.g., P0204).

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In sequential fuel injection, the PCM controls each injector individually. Each injector receives battery voltage from the power distribution center (PDC) or other fused source. The PCM also supplies the ground circuit to each injector through an internal switch called a “driver”. It then monitors each driver circuit for any problems.

fuel injector diagram
Fuel injector diagram | Image Source: Richard McCuistian

If the PCM commands the fuel injector to turn off, it expects to see a high voltage on the driver ground circuit. On the other hand, if it commands the fuel injector to turn on, it expects to see a low voltage on the driver ground circuit. If the PCM is unable to detect these conditions on the driver circuit, it sets the trouble code P0200.

Depending on the severity of the problem, related error codes may also be stored with this DTC. Code P0200 is very similar to error codes  P1222, P0201, P0202, P0203, P0204, P0205, P0206, P0207 and P0208.

Read our technical discussion about fuel injection to fully understand codes like P0200 if you plan to troubleshoot the issue yourself.

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Note: The definition of code P0200 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Possible Causes of the P0200 Code?

P0200 is a generic code, so it can have several triggers. Here are the most common:

  • Defective fuel injector
  • An issue with the PCM
  • Circuit problems, such as damaged wires or loose connections

What are the Common Symptoms of the P0200 Code?

You may notice the following symptoms if you drive a vehicle that has set a P0200 trouble code:

How to Diagnose the P0200 Code

Error code P0200 is a generic code that may be set in different makes and models. However, this does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your specific vehicle.

See also  The Top 6 Signs Of Bad Fuel Injectors

Check out the video below to get an idea of what the diagnostic process for this code might involve:

How to Fix the P0200 Code

Although code P0200 shares similar triggers and symptoms with other engine codes, the appropriate diagnostic and repair procedure will depend on the specifications of your vehicle. If you’re unfamiliar with auto repair, you should leave the job to a mechanic.

If you’re considering troubleshooting this code on your own, it’s a good idea to refresh your automotive knowledge before attempting any fixes. Always consult the vehicle repair manual or an online repair database to learn the appropriate diagnostic procedures for this code.

About The Authors
Richard McCuistian, ASE Certified Master Automobile Technician
Reviewed By Richard McCuistian, ASE Certified Master Automobile Technician

Technical Reviewer at

Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.

CarParts Research Team
Written By Research Team

Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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