Guide To P0B33 OBD Error Code Solutions

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The trouble code P0B33 can be explained as High Voltage Service Disconnect Circuit Issue. It is important to know that the wrong battery voltage can severely affect the engine performance as well as the fuel economy. Also affected by the sluggish acceleration and the braking risk, the OBD code P0B33 error code gets stored in the PCM indicating problematic hybrid battery.

Are you tensed because the P0B33 fault code is flashing? We have got everything which you need and at equitable prices. You must visit us and we promise that you will never regret your decision. The PCM sets the OBD code when the hybrid battery pack voltage signal is out of factory specifications. The high voltage battery is composed of many individual battery cells and the battery energy control module 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 P0B33 will be set.

What causes this problem with the High Voltage Service Disconnect Circuit?

• Problematic voltage service disconnect port
• Issue of voltage service disconnect harness
• Damaged or broken battery connectors and wirings
• Bad electrical connection in the voltage service disconnect circuit

1. Battery Current Sensor - A broken Battery Current Sensor can cause a lot of issues. It would be nice if you get it replaced on time.
2. Battery Coolant Pump - Battery Coolant Pump is an important car part which should never be neglected. May be there is some fault in it due to which P0B33 code may start flashing.
3. Engine Control Module - A faulty Engine Control Module can be troublesome. You can always rely on us as we have best auto parts for our customers.
4. Powertrain Control Module - P0B33 error code also relates to problems with the powertrain that is not able to generate response in time causing distorted engine timing. Find all the Powertrain related parts with us.
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6. Exhaust Gas Temperature Sensor – One of the prominent symptom of this error is that the exhaust gas temperature increases drastically. Buy new sensor now!
7. Manifold Absolute Pressure Sensor – Check for faults in the MAP sensor and replace it now!
8. Oxygen Sensor – Faulty oxygen sensor will lead to lean or rich engine condition and thus should be replaced immediately.
9. Exhaust Valve – Damaged exhaust valve can lead to leakages and should be replaced at first instance. Buy new exhaust valve today!
10. Intake Valve – If the intake valve is leaky, the engine can lead to rich engine condition. Thus, replace it before it affects the engine.

It is essential 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 P0B33 here:

Common Symptoms

• Malfunction Indicator Light On
• Lean or rich engine condition
• Sluggish acceleration
• Affected gear shifts

Here are some ways with the help of which you will be able to correct the OBD Code P0B33.

• Exhaust gas temperature sensor replacement
• Repair or replace leaky intake and exhaust valves
• MAP sensor replacement
• Hybrid battery circuit replacement
• Powertrain Control Module repair or reprogramming

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Here are some steps which you should follow in order to diagnose this P0B33 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 transmission fluid.
• If the transmission fluid is dirty or if it is below the expected level, it has to be refilled or the dirty fluid has to be replaced. Also, the mechanic can check for any sign of leaks, and quickly 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 any shorted wires or dirty or contaminated transmission fluid.
• 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.
• If the resistance level does not decrease with heat and increase as it cools, replace the sensor. If everything has checked out thus far, turn the key to the "ON" position and test for the presence of a voltage (and a ground signal) at the exhaust gas temperature/pressure (or heated oxygen) sensor electrical connector
• If the fuel shutoff switch and all system circuitry checks out, suspect a defective PCM (or other related controller)

Common Mistakes When Diagnosing The P0B33 Code

• Malfunctioning battery contactor assembly
• Battery circuit damages
• Battery wiring and connector problems
• Failure in the battery energy control module