Guide To P2694 OBD Error Code Solutions

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Is your Car’s Check Engine Light illuminating on the dashboard? Do you find sudden decrease in the fuel economy? And is the car engine running rough with black smoke coming from the tailpipe? This might be an indication of problems with the fuel injector of the car which in other words can be an OBD P2694 error.

Each injector has a slightly different fuel flow rate. When your ECU tells your injector to pulse and inject fuel unless it knows the fuel flow rate of each injector the pulse rate for all the injectors will, by default, be the same. So if you have an injector with a slow flow rate then less fuel will be injected into a cylinder and vice versa. During driving, the engine will request more or less fuel depending on the load on the engine but this is done uniformly across all injectors. The ECU needs to identify the flow rate of each injector. It can then be calibrated to adjust the length of the pulse required to ensure the same amount of fuel is being inserted into each cylinder.

Thus, when PCM is unable to get this reading from Cylinder 9 Fuel Injector, OBD code P2694 gets stored in the system.

What causes this problem with the Cylinder 9 Injector Data Incompatible?

• Bad cylinder 9 fuel Injector
• Fuel injector circuit wiring and connector issue
• Fuel injector circuit problems
• CAN and PCM faults

1. Engine Control Module – ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnosis. Replace it now!
2. Powertrain Control Module – Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnosis.
3. Diagnostic Tools – Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment from us!
4. Fuel Injector – Bad fuel injectors can cause starting issues, poor idles and affected performance. Thus, the replacements are in order. Buy new fuel injectors now!
5. Injector Connector – Connectors play an important role in connecting different components, sensors and circuit together. Thus, it is important to replace faulty connectors today!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2694 code by mentioning some major symptoms below:

Common Symptoms

• Reduced/abnormal engine performance
• Affected fuel efficiency
• Lean exhaust codes
• Increased emissions from the tailpipe

Have a look at some ways with which you can correct the P2694 code:

• Bad fuel injector replacement
• Faulty wiring and connector repairs
• CAN wiring replacement and reprogramming
• Powertrain Control Module repair and reprogramming

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of fuel injectors, PCM, glow plug control modules, detective fuel injectors, injectors connectors, damaged injector wiring, connectors, disconnected ground wires to the PCM and a lot more. We are sure that now all your issues would be resolved.

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

• Take the help of an experienced mechanic who will visually inspect the fuel injector and the wiring & other components in relation to Controller Area Network.
• Find and freeze frame data with the code. Then, clear the code and take the vehicle on a test drive under the same conditions.
• If the code reappears, perform a visual inspection of the components and its wiring.
• If the wiring is okay, the injector itself will be tested to confirm operation. Check for the voltage output from the fuel injector and if it isn’t under the desired range, suspect it to be fault and might need replacement.
• If there is no problem found, check for the faulty ECU. Although, this fault is very rare but can be a reason for problematic exhaust system, thus hampering the engine performance. The ECU needs to be replaced in such condition and has to be reprogrammed to erase any stored faulty error.
• Another important thing to note is that, if the controller or the injector is replaced, the information will be absent in the program and will cause error to occur. The CAN (Controller Area Network) is responsible for communicating with the microcontrollers and thus it becomes important to understand the complex wiring and connections in association with the CAN and to replace the damaged physical components immediately.
• The diagnosis to this code should be held by a professional mechanic because of the complexity involved. With the help of an experienced technician and specialized scanner determine the general area of the malfunction to resolve OBD code P2694. Testing every single probe can take hours and if you miss even a single one, everything can go back to square one. Thus, extensive and detailed diagnosis is required.

Common Mistakes When Diagnosing The P2694 Code

• Powertrain Control Module (PCM) faulty
• Cylinder 9 fuel injector issue
• Wiring and connector issue