Error Code P2151: What It Means & What To Do?

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OBD error code P2151 is a generic error code. Now you must be wondering what does this term generic code means. Generic codes are the code that apply to all makes and models. So, what is this OBD error code P2151 about? This error code indicates that there is some issue with your vehicle’s fuel injector group B supply voltage circuit. If you wish to know more about this error code you will need to go through the subsequent sections.

You might be amazed to know that your vehicle’s engine control module, also known as the ECM/PCM is responsible for controlling the signal to the fuel injectors in group of two. Powertrain control module will set this error code P2151 when it detects that one or both of the fuel injectors in group B are not functioning properly. In other words OBD error code P2151 will be set when the PCM detect high voltage within the fuel injector group B supply voltage circuit.

What causes this problem with the Fuel Injector Group B Supply Voltage Circuit High?

• Malfunctioning fuel injector or fuel injectors
• Faulty fuel injector wiring harness
• A malfunction within the Internal wiring
• Internal issues with the car’s ECM (Engine Control Module)
• Problems with the fuel injector connector

1. Engine Control Module - Engine Control Module of your car is also known as the engine computer. It is extremely essential to keep your vehicle’s ECM in good shape to avoid any sort of performance issues with your car. If you need one to get rid of this OBD error code P2151 then you can easily find one with us and that too at the most economical prices.
2. Fuel Injector - If you want to avoid rough engine running and drivability issues then you must check your vehicle’s fuel injector. If faulty they can lead to OBD error code P2151. If you are already facing this error code then we recommend you to replace the defective ones with new ones with us today.
3. Fuel Injection Harness - We have in stock high end fuel injection harness and all related parts for every make and model on the Canadian road. All you need to do to get them is to browse through our website and order your needed parts.
4. Fuel Injection Connector - Chances of fuel injection connectors being damaged is quite high, as they are continually exposed to engine heat. If you need new fuel injectors to get rid of this error code P2151 then you can find one with us at PartsAvatar.
5. Ohmmeter - If you want to be that DIY guy and need Ohmmeter to diagnose your vehicle problem yourself, then we have a good news for you. We have an extensive collection of all diagnostic tools to help you become that ideal DIY guy.

Willing to know some common symptoms of OBD Code P2151? Your wish is our demand. Have a look at them below:

Common Symptoms

• Inconsistent engine performance
• Engine misfires
• Fall in fuel efficiency
• Inconsistent idle conditions
• Rise in smoke
• Weird engine noises
• Fall in engine power
• Vehicle’s non- ability to climb steep hills
• Decline in throttle response

We have listed out so ways which would help you to correct the occurrence of OBD Code P2151. They are mentioned here as follows:

• Firstly, repair or replace any damaged, shorted, open, or loose injector wiring and connectors
• Next, repair or replace faulty fuel injector circuit
• Thirdly, replace the blown or damaged fuses with a new one
• Fourthly, repair or replace damaged or blown circuits and all the fuel injector related components
• Also make sure to repair or replace damaged or defective ECM, Although you will need to do this in rare cases.

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of ECM, Fuel Injector, Ohmmeter and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• In order to diagnose this error code P2151 you will need to use a scanner to check for the stored error code.
• Next, you will have to connect a scanner to the diagnostic port of the vehicle and recover the codes and freeze frame data. This will help you in further diagnosis. Now you will need to conduct a road test and check what all codes return.
• If you come across any other codes related to fuel injector system we would recommend you to get rid of them first before attempting to solve the error code P2151.
• To undergo a complete diagnosis of this error code, you will need few tools such as diagnostic scanner, a digital volt/ohmmeter, and a reliable vehicle information source. While diagnosing make sure that you carefully check the for the constant power supply to the Fuel Injector Group B using ohmmeter.
• Next, make sure you check all the fuel injection system fuses and relays for any damage. Also conduct a continuity and resistance test for circuits related to Fuel Injector Group B. Lastly remove fuel Injector and observe fuel spray pattern for abnormalities.

Common Mistakes When Diagnosing the P2151 Code

There are chances that you undergo engine control module replacement, but it might not be needed. This way you will end up spending unnecessary bucks on your car. The code could be solved with a simple computer learn procedure or ecu reprogramming. Therefore a proper diagnosis is always recommended.

• Faulty fuel injector
• Failing Powertrain Control Module (PCM)
• Issues with the wiring