P0B0A OBD Error Code: Problem & Solutions

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There’s a P0B0A code flashing in your vehicle and you have no clue what that means or how to make it go away? The check engine light may be adding to the anxiety of the situation, well, worry not! We are here to help you understand and resolve this OBD-II error code. The P0B0A code is set by the Powertrain Control Module (PCM) which is the engine computer of your vehicle. It sets this code when it notices a malfunction of the auxiliary Transmission Fluid Pump.

The P0B0A code is defined as Auxillary Transmission Fluid Pump Motor Supply Voltage Circuit low, it causes an increase in fuel consumption in your vehicle. Engine Control Module (ECM) is responsible for monitoring the auxiliary transmission fluid pump motor, when the signal of the motor is not in line with the factory specifications this code will be set by the PCM. The fluid pressure in the transmission is maintained by the auxiliary transmission fluid pump. Whenever the pump stops functioning as needed by the ECM/PCM this code will be set.

What causes this problem with the Auxiliary Transmission Fluid Pump Motor Phase U Current Low?

• Fault present in the Auxiliary Transmission Fluid Pump 
• The harness of the Auxiliary Transmission Fluid Pump is open or shorted
• The circuit of the Auxiliary Transmission Fluid Pump is having poor electrical connection

1. Auxiliary Transmission Fluid Pump - Try to see if you can repair the problem, otherwise go for replacement.
2. Auto Transmission Fluid Pump Harness - Check the harness for repairs, and accordingly fix it. If that doesn’t help to resolve P0B0A error, then you will have to replace the faulty harness.
3. Pump Motor - Try to fix or repairs and see if that helps to clear the P0B0A error, otherwise opt for replacements from Parts Avatar. Order easily online, from the comfort of your home and have your order reach you at your doorstep.
4. Diagnostic Tools - Buy the best diagnostic tools to help you resolve your OBD codes. Choose from a wide price range online at Parts Avatar, order and get free shipping on orders worth CAD $99 and above.
5. Powertrain Control Module - You may need to replace your PCM, make sure you buy the best quality PCM compatible with your vehicle. Parts Avatar makes it easy to buy auto parts, simply select your vehicle’s make, model and year of manufacture and order now!
6. Engine Control Module - If repairing isn't fixing the problem with your ECM, go for replacement with us. We ship all across Canada in a matter of days. Order online easily and track your shipment till it reaches you.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0B0A here:

Common Symptoms

• The check engine light is on/ service engine Soon warning light is on
• Decreased fuel economy
  

You want to correct the trouble code P0B0A read these points below and start correcting the problem.

• Repair or replace the Auxiliary Transmission Fluid Pump
• Repair or replace the ECM or PCM
• Repair or replace the faulty harness and circuits

Parts Avatar Canada is here to solve all your issues related to car parts. We have a wide range of best priced Auxiliary Transmission Fluid Pump, Transmission Fluid Pump Harness, Transmission Fluid Pump, Pump Motor and a lot more to help you out in fixing your car. Order online and receive your order at your doorstep!

It’s now time to use your knowledge to resolve this OBD error code. Follow the diagnosis steps below to get rid of P0B0A code.

Start off by getting hold of your OBD scanner and connect it to the diagnostic port of your vehicle. Make sure you retrieve all the codes and freeze fame the data also, remember to make note of them all in the order of appearance. If you are able to find any codes set prior to P0B0A, then you will have to resolve them first. Previous codes can cause other error codes to set as well, so it’s important that they are taken care of first. After making note of all the codes, clear them and take your vehicle on a test drive to see if the code resets or if the PCM enters readiness more. If the latter happens, then you are having an intermittent condition, this condition may have to worsen before accurate diagnosis can be made. If the code is reset, then you will have to start your diagnosis, the first step is to check all of the electrical system connected with this issue.

Check all the wires, circuits, connectors, harnesses etc. for damages like burning, breaks, corrosion, short etc. If you are able to find any of these issues,simply repair and correct them or opt for replacement. After you have sorted the circuitry you will have to clear the codes and again go on a test drive. Wait to see if the code returns or not (PCM enters readiness mode).If you find that the code is reset, then you will have to check all the parts pertaining to this problem. For this you will require your specific vehicles Technical Service Bulletins or TSB. Match them to the year of manufacture, make, model and engine. Once you have found it, match the symptoms and the error code P0A78 and see what diagnostic steps are mentioned in the TSB. Apart from having diagnostic steps the TSB will also have details of the parts and components related to this error. All the manufacturer specified configurations will also be present. Use the directions given by the TSB to fix your problem, the connector pinout charts, and circuit flow charts etc will be extremely helpful and enable you to avoid any issues with diagnosis.

If you’re still confused and don’t know how to solve the code, take help from a trained OBD diagnostician and resolve this P0B0A code.

Common Mistakes When Diagnosing the P0B0A Code

• Failure of the Auxiliary transmission pump relay
• Failed Powertrain Control Module (PCM)
• Issue with the wiring