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P0B7A - OBD Trouble Code

OBD Code P0B7A - Hybrid Battery Voltage Sense "M" Circuit High

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Are you experiencing sluggish performance and acceleration? Is there a problem with the engine performance and affected fuel economy? All this with lights keeping stayed on due to high voltage may be due to vehicle battery problems leading to OBD code P0B7A error getting stored in the PCM.

Learn More About OBD Error Code P0B7A

OBD-II Code P0B7A is defined as a Hybrid Battery Voltage Sense "M" Circuit High. The battery cells need to emit the voltages equally and if any cell is emitting the voltage high, the PCM will set the OBD code P0B7A error in the system and it may go into limp mode.


What causes this problem with the Hybrid Battery Voltage Sense "M" Circuit High?


  • Hybrid Battery Pack faulty
  • Open or shorted harness to Hybrid Battery Pack
  • Poor Electrical Connections to Hybrid Battery Pack

Replace/Repair These Parts to Fix OBD Code P0B7A

  1. Battery Current Sensor - Defective car Battery Current Sensor can be a major reason why P0B7A code depicts. So make sure to replace it online so that you don’t have to face any further issues.
  2. Car Battery - Everything is okay with the ECM and still OBD code P0B7A triggering? Then there must be some defects in Car Battery. Replace them as soon as possible.
  3. Battery Coolant Pump - P0B7A code flashing? Get your Battery Coolant Pump inspected from a mechanic.
  4. 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.
  5. Powertrain Control Module - P0B7A code can display due to some issues in the Powertrain Control Module. So it is very important to replace the Powertrain Control Module with us at equitable prices.
  6. 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 P0B7A code.
  7. Electronic Control Unit - Are there some faults in your Electronic Control Unit? Don’t waste time and get them replaced or else P0B7A code can turn up.
  8. Starter Motor – The engine will have problems with starting and will stall with the starter motor doesn’t work properly. Replace faulty motor now!
  9. Car Battery & Cables – Damaged, corroded and faulty battery and cables can also be a reason for bad engine performance. Replace it now!
  10. Diagnostic Tool - Use high grade diagnostic tools to resolve OBD code P0B7A error. Visit us today to grab amazing deals.

Symptoms Of OBD Error Code P0B7A

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0B7A code by mentioning some major symptoms below:


Common Symptoms


  • Light may stay on or work intermittently
  • Sluggish Acceleration
  • PCM faults
  • Vehicle going into limp mode
  • Reduced fuel economy

How To Correct P0B7A Hybrid Battery Voltage Sense "M" Circuit High

Have a look at some ways with which you can correct the P0B7A code:


  • It is essential to restore the flawed hybrid battery
  • Repair or replace the quirky hybrid battery cut off switch circuit
  • Carefully adjust the faults in the hybrid battery cut off switch
  • The hybrid battery cut off switch harness should be restored to working order
  • Recondition the non-functioning car battery
  • It is necessary to perform proper service of the unsound battery current sensor
  • Adjust the flawed hybrid battery cut off switch circuit


If you need any parts to fix this problem you can easily find them with us. Not only that we also have in stock the best in range auto parts and that too at the most budget friendly prices ever online. Whether you need a Hybrid Battery, Hybrid Battery Pack, Hybrid Battery Voltage Sensor, Battery Cable, Battery Assembly, Battery Control Module, Exhaust Manifold, Exhaust System, Powertrain Control Module, Battery Connection, Exhaust Leak, Battery Smart Unit, you can simply rely on us for quality auto parts.

Easy Diagnosis Of Engine Error OBD Code P0B7A

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


  • This is a general type of error code which is diagnosed with the help of a scanner.
  • The mechanic will insert a scanner to diagnostic port of the vehicle and recover the codes and freeze frame data.
  • If he happens to find any additional error codes, he has to address them as well.
  • Once it is done, he has to reset the vehicle, and then test drive to see if the error code appears.
  • If the error code does not return, then there can be an erratic condition.
  • Then the mechanic has to check the wires, connectors and other electrical components and quickly replace them if he finds them to be damaged or defective.
  • Check for the damaged hybrid battery and its components for error. It the mechanic finds the fault in the connectors in relation to the battery, replace it immediately.
  • Also check for the particular battery cells emitting high voltages and thus might need battery replacement as well.
  • If all the components seems to work perfectly, inspect the PCM for faults and replacement along with reprogramming.


Common Mistakes When Diagnosing the P0B7A Code


  • Wiring and connector issues
  • Hybrid battery cells issue
  • PCM and ECU issue

Other Diagnostic Codes Related To OBD Code P0B7A

P0B77 - Hybrid Battery Voltage Sense "M" Circuit

P0B78 - Hybrid Battery Voltage Sense "M" Circuit Range/Performance

P0B79 - Hybrid Battery Voltage Sense "M" Circuit Low

P0B7B - Hybrid Battery Voltage Sense "M" Circuit Intermittent/Erratic