P2636 OBD Error Code: Problem & Solutions

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When you find the check engine light flashing in your vehicle it can cause great stress and anxiety. Not resolving it can cause bigger damage to the vehicle and also increase your frustration as the vehicle performance decreases. The P2636 is defined as a Fuel Pump "B" Low Flow/Performance, this code is set when the Powertrain Control Module (PCM) picks up an incorrect signal with the Fuel Pump.

You have been finding that the fuel pump isn’t priming as well as it used when the key is on. In such a case try to determine the fuel pressure by checking if a bright white-bluish spark is present at all four plugs. You will have to also check the mechanical timing to see if that’s fine too. Read on to know more about how you can diagnose this P2636 code and also resolve it.

What causes this problem with the Fuel Pump "B" Low Flow/Performance?

• Problematic fuel pump relay
• Issue with the fuel pump
• The harness of the Fuel pump is open or shorted
• The circuit of the Fuel pump is showing poor electrical connection
• There may also be a malfunction of the entire Faulty fuel pump control module

1. Engine Control Module - Is a computer system installed in your vehicle that overlooks and managed all the other modules and components. The ECM needs to function perfectly so that codes like P2636 can be detected and resolved as soon as possible. If you have found any faults in it, opt for either repairs or replacement. Parts Avatar Canada offers free shipping on orders above CAD $99, with no hidden charges or customs.
2. Fuel Pump - A significant part of your vehicle combustion system, the fuel pump mainly pumps the needed quantity of fuel from the tank to the vehicle engine at accurate pressure. An issue with the fuel pump can cause the P2636 code to be set by the PCM. Try to repair it and see if that helps, otherwise you will be left with no choice but to go for replacement. You can find vehicle compatible fuel pumps on Parts Avatar. It’s super easy and convenient and you will receive your order in just a matter of days!
3. Fuel Pump Relay - Is part of the internal combustion engine vehicle which helps start the car by pressurizing the fuel system.  The P2636 code may have set because of a fault in the fuel pump relay. Try repairs or replacement as needed to resolve this issue. Parts Avatar provides a wide range of quality fuel pump relay at competitive prices online. Order and track it till it reaches your doorstep.
4. Fuel Pump Control Module - Helps operate the fuel pump, as it Is a relay system which releases power to it. Thereby allowing the fuel pump to release fluid at the correct pressure. A faulty fuel pump control module can cause Powertrain Control Module (PCM) to set the P2636 code. Try to repair it and see if that helps, otherwise you will have to replace it. You can find replacements at the comfort of your home at Parts Avatar. We ship to the remotest corners of Canada from our warehouses located at Edmonton and Brampton.
5. Powertrain Control Module - The PCM is responsible for managing all the other modules in your vehicle. A problematic PCM causes the P2636 code to set also. Find PCM replacement at Parts Avatar and save on cross border shipping and customs. For any queries you can also consult with our customer care support available online 24/7.
6. Wheel Speed Sensor - This sensor is basically a type of tachometer. It performs the task of reading the speed of the vehicle’s wheel rotation and pass the information on to the PCM. Solve the P2636 code by repairs or replacement.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2636 code by mentioning some major symptoms below:

Common Symptoms

• Significant reduction in the engine performance
• Engine has difficulty starting

You can correct the P2636 code by simply repairing or replacing the following faulty parts as needed:

• Fuel Pump Control Module
• Fuel Pump
• Fuel Pump Relay
• Powertrain Control Module
• Wheel Speed Sensor

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 Pump, Fuel Pump Relay, Fuel Pump Control Module, PCM, Wheel Speed Sensor and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code P2636:

Begin your diagnosis by first performing a visual inspection of all the wiring and electrical connectors. The ones that need repairs will have to be checked and the ones that are beyond repair will need to be replaced. Check the code and see if it reappears, otherwise you may have resolved the issue. If the code is reset, you will need to continue diagnosis.

You can test the fuel pressure with the help of a fuel pressure gauge. This will have to be compared with the specifications of the manufacturer. Upon testing if you have found that the fuel pressure is low, you will have to check how much fuel is present in the tank. If the tank is full then listen to the sound of the electric fuel pump while its operating. If the sound of the pump can be heard and the vehicle still is not starting, then there must potentially be a clog in the fuel filter or an issue with the fuel injector circuitry. This includes the Powertrain Control Module (PCM).

In case you weren’t able to hear the fuel pump, you can use a rubber mallet to gently tap at the bottom of the fuel tank, have someone else try to start the vehicle. If by gentle whacking of the tank the vehicle is able to start, you have a faulty fuel pump. This is one way of testing it out which is simple. In case you’re still unable to start the vehicle, then a battery test will have to be done at the fuel pump connector. If no voltage is present, then follow the fuel circuit of the fuel panel, relay and/or PCM.

Quite a lot of vehicles that have the OBD-II systems employ a fuel pressure sensor in the fuel injector rail so that they can monitor the operating fuel pressure.

Common Mistakes When Diagnosing the P2636 Code

• Failed Fuel pump
• Failure of the Powertrain Control Module (PCM)
• Problems present with wiring