P0B90 OBD Error Code: Problem & Solutions

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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 P0B90 error getting stored in the PCM.

OBD-II Code P0B90 is defined as a Hybrid Battery Voltage Sense "R" Circuit Issue. 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 P0B90 error in the system and it may go into limp mode.

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

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

1. Battery Current Sensor - Defective car Battery Current Sensor can be a major reason why P0B90 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 P0B90 triggering? Then there must be some defects in Car Battery. Replace them as soon as possible.
3. Battery Coolant Pump - P0B90 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 - P0B90 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 P0B90 code.
7. Electronic Control Unit - Are there some faults in your Electronic Control Unit? Don’t waste time and get them replaced or else P0B90 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 P0B90 error. Visit us today to grab amazing deals.
11. Exhaust Manifold – Have you checked the exhaust manifold for error? Check and replace faulty components now!

Well, if you are looking to know about the common symptoms related to this error code P0B90, we are have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms:

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

Here are some ways with the help of which you will be able to correct the OBD Code P0B90.

• 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

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Here are some steps which you should follow in order to diagnose this P0B90 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.
• 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. If, when looking under the hood, you notice that the drive belts appear loose, they need to be tightened or completely replaced.
• If there is a noticeable pool of fluid underneath the car, this could be a sign of the cylinder head gasket failing. That will be confirmed in the form of billowing smoke being blown from the exhaust system.
• Parts or components should not be replaced with reference to only a P0B90 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
• If all the components seems to work perfectly, inspect the PCM for faults and replacement along with reprogramming.

Common Mistakes When Diagnosing the P0B90 Code

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