P0B48 - OBD Trouble Code

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The trouble code P0B48 can be described as Hybrid/Electric Vehicle Battery 3 Circuit Voltage Issue. Is your vehicle’s check engine light illuminated? Are you experiencing sudden decrease in engine power and acceleration? Is there a drop in the fuel economy with increased level of emissions? All these indicate problem with the car’s hybrid battery and the powertrain control module, thus flashing OBD Code P0B48 error.

Don’t worry if P0B48 error code is triggering again and again. We offer wide range of auto parts at affordable prices to our dear customers. The high voltage battery is composed of many individual battery cells. The Battery Energy Control Module (BECM) monitors all the cells in the high voltage battery pack to make sure they are all contributing equally to the high voltage system. If one cell is determined to be unequally contributing, code P0B48 will be set. The powertrain control module (PCM) monitors the hybrid battery 3 circuit high voltage issue. The PCM sets the OBDII code when the hybrid/electric battery 3 circuit voltage signal is out of factory specifications.

What causes this problem with the Hybrid/Electric Vehicle Battery 3 Circuit High Voltage?

• Hybrid battery pack malfunctioning
• Hybrid battery pack harness and wiring open or short
• Hybrid battery pack circuit and connectors faulty
• Powertrain Control Module faulty

1. Powertrain Control Module - Do you remember when was the last time you got your car Powertrain Control Module checked up? A dirty Powertrain Control Module can cause a lot of issues like displaying P0B48 code.
2. Car Battery Cable - Poor Car Battery Cable can cause a lot of difficulties, so why not get it replaced at time?
3. Engine Control Module - OBD Code P0B48 can appear because of faulty boost pressure/ turbocharger position sensor.
4. Car Battery - Everything is fine with Engine Control Module and still P0B48 code triggering? Then you must get your Car Battery checked.
5. Electronic Control Unit - A lot of issues can arise do to defective Electronic Control Unit. Did you just see P0B48 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
6. Body Control Module Component - Faulty Body Control Module Component can be the reason why P0B48 code is flashing. Visit us to purchase top notch Body Control Module Component online.
7. Hybrid Battery - It is an important auto part which needs full care. A faulty Hybrid Battery can be a reason behind the flashing up of P0B48 code.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0B48 code to be stored:

• 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.
• On test driving, if the P0B48 code does not return soon, he will know that an erratic condition exits.
• But if the error returns instantaneously, he will check every components of the control module as well as the circuit like connectors, wires, harness, fuses etc for any possible fault.
• If any component is damaged, he will fix them right away.
• After performing this repair, he will inspect the transmission fluid as well as its level.
• If the level is below the manufacturer’s specification, it has to be refilled and if the fluid is murky or contaminated it needs to be replaced.
• Every time a repair work is carried out, make sure that the mechanic test drives the vehicle after every repair so that the diagnosis is successful. This can eventually help him to know as to where the error occurred.
• A sure sign of this is smoke or steam being emitted from underneath the hood. The ignition timing could be set incorrectly and will require adjustment.
• A noticeable pool of fluid underneath the car could be a sign of the cylinder head gasket failing. That can cause billowing smoke being blown from the exhaust system.
• A dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.

Common Mistakes When Diagnosing The P0B48 Code

• Battery contactor assembly issues
• Hybrid Battery circuit issue
• Faulty battery harness and connectors
• Energy Control Module faults