P0B38 - OBD Trouble Code

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The trouble code P0B38 can be explained as Motor Electronics Coolant Pump "B" Control Circuit Open. The motor electronics coolant pump "B" is being monitored by the engine control module. This error code would be set by the ECM when the motor electronics coolant pump "B" would not be as per the parameters set by the manufacturer.

Do you want to know more about the P0B38 fault code? Don’t worry! Parts Avatar Canada is here at your service. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made from 1996 up to present. It’s also more common among Audi, Citroen, Chevrolet, Ford, Hyundai, Nissan, Peugeot, and Volkswagen vehicles. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model, powertrain configuration type, to another.

What causes this problem with the Motor Electronics Coolant Pump "B" Control Circuit/Open?

• Inoperative motor electronics coolant pump 'B'
• Opened or shorted motor electronics coolant pump 'B' harness
• Motor electronics coolant pump 'B' circuit bad electrical connection

1. Battery Coolant Pump - P0B38 code flashing? Get your Battery Coolant Pump inspected from a mechanic.
2. Engine Control Module - If everything is alright with Battery Coolant Pump, then there is surely some defect in Engine Control Module. Get it replaced before the situation gets worse.
3. Powertrain Control Module - P0B38 code can display due to some programming problems in the Powertrain Control Module. So it is very important to replace the Powertrain Control Module with us at equitable prices.
4. Hybrid Battery - Do you remember when was the last time you got your car Hybrid Battery checked up? A dirty Hybrid Battery can cause a lot of issues like displaying P0B38 code.
5. Electronic Control Unit - Are there some faults in your Electronic Control Unit? Don’t waste time and get them replaced or else P0B38 code can turn up.

It is essential 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 P0B38 here:

Common Symptoms

• Check Engine Light On
• Car Cabin Overheating
• Air Conditioner not working properly

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• Fix the defective car battery
• Repair faulty motor electronics coolant pump 'B' switch
• Restore the flawed motor electronics coolant pump 'B' circuit
• Rehabilitate the defaults in the motor electronics coolant pump 'B'
• Carefully adjust the faults in the powertrain control module

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade PCM, Engine, Coolant Pump, Engine RPM, Air Conditioning and a lot more for our precious customers.

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

• The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle.
• After performing a careful inspection, every of the stored codes and freeze frame data are retrieved as it can help down the way for further diagnosis process.
• Most often he has to inspect the solenoid itself to see if they are faulty or damaged. Additional error codes that are stored in the vehicle are also addressed.
• The mechanic performs a continuity test between the PCM and solenoid to check the resistance.
• If the solenoid or the control modules are not faulty, he will then retune the code and test drive the vehicle.
• Now when the car is taken out for a test drive, if the P0B38 code does not return soon, he will know that there is an existence of erratic condition.
• If all the components are working properly, the powertrain control module can also be at fault. Although this is a very rare scenario, but must be checked for any malfunctions. Repair or replace and reprogram the PCM as required to solve the problem.

Common Mistakes When Diagnosing The P0B38 Code

It is important to follow the diagnostic steps correctly and thus should be taken care of by a qualified mechanic only.

• There can be a failure in the high voltage coolant pump
• Defaults in the Powertrain control module
• Some issues related to the wiring