Error Code P0B19: What It Means & What To Do?

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The hybrid battery pack voltage sense ‘C’ circuit is carefully monitored by the engine control module (ECM). When the hybrid battery pack voltage sense ‘C’ circuit does not meet the factory expectations, then the ECM will set the P0B19 error in the vehicle.

The hybrid battery pack voltage sense ‘C’ circuit is a general type of diagnostic trouble code. There are several individual battery cells in the hybrid battery pack like over 300 cells. A voltage monitor is attached to each group so that the available voltage for each cell groups is informed to the battery control module or hybrid powertrain control module. The P0B19 error code will be set in the vehicle if the voltage of the cell group is less than what is expected.

What causes this problem with the Hybrid Battery Pack Voltage Sense "C" Circuit?

• The hybrid battery pack might be broken.
• The hybrid battery pack harness might either be shorted or you might see an opening in the circuit.
• Very poor electrical connection in the hybrid battery pack circuit.

1. Hybrid Battery Pack - Faulty hybrid battery pack will result in malfunctioning of the vehicle. Replace it instantly.
2. Hybrid Battery Pack Current Sensor - Damaged or defective hybrid battery pack current sensor have to be replaced to avoid P0B19 error code.
3. Battery Cables - The vehicle might malfunction if the battery cables are damaged. Replace them as soon as possible.
4. Battery Current Sensor - Are you looking for a right replacement for the damaged battery current sensor? Get it from Parts Avatar at the best prices.
5. Battery Control Module - P0B19 error can be easily avoided if the defective battery control module is repaired.
6. Engine Control Module - Repairing or changing the damaged engine control module is essential to avoid P0B19 error in the vehicle.

Well, if you are looking to know about the common symptoms related to this error code P0B19, we are have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• The service engine’s warning light and engine light will keep blinking and stays on.

Fixing problems with your car is not as easy as it might seem. You need to be extremely careful and follow certain steps.

• Altering the damaged hybrid battery pack and hybrid battery pack current sensor.
• The damaged engine control module has to be changed.
• Changing the damaged battery cables and battery control module.

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

• The service manual of the manufacturer is highly needed to perform this diagnosis.
• The signal is then sent forth to the control modules that are affected so that they can use this data to complete several other tasks.
• Controller area network is shortly said as CAN. Can generally signify a communication bus, where multiple microcontrollers can communicate with each other without the help of host computer.
• During engine off, as the exhaust temperature decreases, the resistance of the circuit will increase and so the feedback voltage signal which goes to the PCM will decrease.
• In this type of error code, as you accelerate the vehicle, you will hear very strange loud noises for instance like an explosion from the rear portion of the vehicle.
• You have to primarily check the carburetor to make sure that both the fuel and air combination are correctly adjusted.
• If each of these settings are perfect, carefully check the distributor cap for any cracks or splits as it can result in backfiring.
• Next, check the spark plugs if they are clean and defective free and then check the engine gaskets for any possible damages as they hold responsibility for proper exchange of gas within the engine.
• This error code is specifically related to the camshaft timing. You will find the illumination of the engine light and the error code will be set if the camshaft timing is over-retarded.

Common Mistakes When Diagnosing the P0B19 Code

One common mistake which are made by the mechanic while diagnosing the P0B19 error is with the battery contactor assembly and battery energy control module which might be malfunctioning.