Guide To P0B85 OBD Error Code Solutions

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The trouble code P0B85 can be explicated as Hybrid Battery Voltage Sense "O" Circuit Intermittent/Erratic. 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 P0B85 will be set. The powertrain control module (PCM) monitors the hybrid battery G circuit voltage issue. The PCM sets the OBDII code when the hybrid/electric battery G circuit voltage signal is out of factory specifications

Do you want to gain some more knowledge about the P0B85 trouble code? The hybrid battery is being monitored by the engine control module. This trouble code would be set by the PCM when the hybrid battery would not be as per the specifications set by the manufacturer.

What causes this problem with the Hybrid Battery Voltage Sense "O" Circuit Intermittent/Erratic?

• Defaults in the battery smart unit
• Unusable HV battery assembly
• Quirks in the hybrid/electric vehicle battery pack
• There can be distorted hybrid/electric vehicle battery interface control module

1. Car Exhaust System Parts - Are your Car Exhaust System Parts damaged or broken? Don’t worry as we have solutions for all your problems.
2. Exhaust Manifold - Everything is okay with the Hybrid Battery and still OBD code P0B85 triggering? Then there must be some defects in Exhaust Manifold. Replace them as soon as possible.
3. Powertrain Control Module - The P0B85 code can also arise due to some issues in Powertrain Control Module. So it is advised to replace them as soon as possible.
4. Car Battery - Do you remember when was the last time you got your Car Battery checked up? A damaged Car Battery can cause a lot of issues like displaying P0B85 code.
5. Engine Control Module - Engine Control Module is an important car part which should never be neglected. May be there is some fault in it due to which P0B85 code may start flashing.
6. Hybrid Battery - Defective car Hybrid Battery can be a major reason why P0B85 code depicts. So make sure to replace it online so that you don’t have to face any further issues.
7. Auxiliary Battery Relay - Auxiliary Battery Relay is an important auto part. Take care of it and you can rely on us to purchase best quality Auxiliary Battery Relay online.

It is vital 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 P0B85 here:

Common Symptoms

• An engine light flashing on (or service engine soon warning light)
  

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• Repair or replace the quirky hybrid battery
• The malfunctioning engine control module should be repaired or replaced as per the need
• Carefully adjust the faults in the car exhaust system parts
• Make sure to mend the faulty hybrid/electric vehicle battery pack
• Recondition the non-functioning auxiliary battery relay
• It is necessary to perform proper service of the unsound hybrid/electric vehicle battery interface control module
• Adjust the flawed hybrid/electric vehicle battery pack

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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.
• But, if the error code returns, then the mechanic has to check the hybrid battery.
• Also, the mechanic can check for any sign of damage in other related parts and then fix the issue.
• 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.
• If the issues are not yet sorted out, then the mechanic will use a digital voltmeter/ ohmmeter and connect it to the vehicle.
• Once the circuit is inspected, he will thoroughly check all the harness and repair them accordingly.
• In most cases, this error code can arise mostly because of defective hybrid battery.
• Whenever the mechanic or a trained professional, repairs any of the component like wires or connectors, he will reset the code and test drive the vehicle again to see if the error code appears again.
• This can actually help the mechanic to know if the problem is fixed.

Common Mistakes When Diagnosing The P0B85 Code

• Flaws in the high voltage battery connection
• There can be some issues in the high voltage battery assembly
• Failure in the car wiring