Error Code P00B0: What It Means & What To Do?

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If you experience exponential drop in the fuel economy, and your car engine is stalling with improper throttle response and Check Engine Light turning on. It might be indicative of OBD Code P00B0 error.

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Turbocharger/Supercharger Boost Control "B" Module

Turbochargers, superchargers use energy generated from the exhaust pulses, belt-driven screw-type, etc., to increase the amount of air that can be introduced to the combustion chamber. In the forced induction systems, intake pressures need to vary and need to be adjusted according to the operator's many power needs. Manufacturers use a form of boost control valve (AKA, Wastegate, boost control solenoid, etc.), which is monitored and controlled by the ECM (Engine Control Module), to make sure the air/fuel mixture is ideal. It’s done by mechanically adjusting the "vanes" in the charger which are responsible for adjusting the amount of boost (intake pressure) to the chamber. As you can imagine, a problem within the boost controlling component, may cause drivability issues. The problem is, when the ECM loses control of the boost, typically, your vehicle goes into "limp" mode to avoid engine damage.

What causes the problem with the Turbocharger/Supercharger Boost Control?

• Burnt, damaged, shorted, disconnected, or corroded wiring and/or connectors
• Vacuum leaks caused by damaged, split, dislodged, hardened, or perforated vacuum lines
• Insufficient vacuum due to a defective vacuum pump
• Defective vacuum actuator and vacuum control solenoid
• Defective stepper motor
• Mechanical defects of the variable vanes
• Mechanical failure of the turbocharger itself
• Defective, or malfunctioning boost pressure or turbine speed sensor
• Clogged catalytic converter

1. Turbocharger - A faulty turbocharger directly affects the combustion chamber performance. Replace your old turbochargers with us!
2. Supercharger - Supercharger which is fault affects the density and pressure of air entering the internal combustion engine. Replace damaged supercharger and parts today!
3. Turbo Boost Sensor - If the Boost pressure sensors and damaged, it won’t be able to control the boost level produced in the intake manifold of a turbocharged or supercharged engine. Replace old sensor today!
4. Boost Pressure Gauge - An OBD code can also be mistaken by faulty gauge readings. Replace the faulty one now!
5. Engine Control Module - OBD Error Code P00B0 can also be due to faulty ECMs. Get the faulty electrical replaced as soon as possible.
6. Powertrain Control Module - Find all the Powertrain related parts with us to solve the PCM related issues.
7. Auto Switches & Sensors - Always check for faulty sensors and switched first while diagnosing. So, it will be a good decision to replace them now.
8. Intake Manifolds - Replace damaged or old air intake manifolds as it adversely affects the engine’s performance. Visit us today!

Typical symptoms of code P00B0 are much the same across all applications, although the severity of one or more symptoms may vary between applications. Below are some typical symptoms associated with this code-

• Excessive turbo lag
• Excessive oil consumption
• Loss of power that can vary from slight to severe
• White smoke from the tailpipe may be present
• Mechanical, or whistling noises may be present at some engine speeds
• In some cases, the turbocharger may suffer severe, to fatal mechanical damage

Proper scan tools should be used to detect and diagnose the problems related to a particular OBD error code. After testing it is important to check that the error doesn’t reflect back anymore. Some of the common components that account to the major problems of the P00B0 error code and when fixed can fix the problem are:

• Replacement Turbocharger/Supercharger – This component keeps the check on air entering the engine and coordinated with the ECM specifying the air’s temperature before it enters the engine.
• Bad wiring to the turbocharger, catalytic converter, and inter coolers can be the first reason for the sensor’s fault and for the Error P00B0 to flash.
• PCM (Powertrain Control Module) – If all the other tests of the sensor and circuit come out to be perfect, then the PCM should be checked for faults and replaced if necessary.

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P00B0 is properly diagnosed with an advanced scan tool capable of factory sensor readings (not just one from an auto parts store). A qualified technician can read the data from the advanced scan tool to determine when the problem occurred, or if it is still occurring. They may clear the code/light and test drive the vehicle while monitoring the scan tool data to see if the fault returns or is present.

Based upon the conditions of the test, possibly clearing the code, and road testing the car while monitoring the data, further diagnosis may be required. Diagnosis may require multiple steps such as:

• Record all fault codes present, as well as all available freeze frame data. This information can be of use should an intermittent fault be diagnosed later on.
• Knowing how variable boost control systems work makes diagnosing faults in the system considerably easier, so spend an hour or so reading the relevant section(s) in the repair manual, and be sure to use the manual to locate all the parts and components that make up the system. Do not proceed to next step without understanding of how the system works, where all the components that make up the system are located, and how these components interact to make the system work as intended.
• The variable boost control system will either be vacuum -, or electrically operated, so once you have identified the various components
• If the stepper motor does not rotate freely, or does not rotate at all, consult the manual to determine the correct procedure to test the resistance, and continuity of the motor, as well as all associated wiring, sensors, and connectors. Be sure however to disconnect the boost control system from the PCM and other relevant controllers during this step to prevent damage to the controller(s).
• If the variable boost control system is vacuum controlled, locate all associated vacuum hoses, actuators, and control solenoids. Inspect all vacuum hoses for visible damage such as splitting, cracking, hardening, or perforations, and replace all hoses and lines as required.
• If no damage to vacuum lines is found, locate the vacuum actuator that controls the variable vanes, and connect the vacuum pump to it where the vacuum system normally attaches to the actuator.

Common Mistakes When Diagnosing OBD Code P00B0

Always take assistance of a qualified technician to know the problem to this error. Never lose sight of the symptoms and never be in hurry to come to a conclusion as sometimes very small issue can lead to flashing of the OBD errors. Some of the major mistakes related to code P00B0 are mentioned below.

• Replacement of the Turbochargers without checking the associated wirings and terminals
• Powertrain Control Module (PCM) replacement without inspecting the sensors and data transmission units
• Worn out and damaged wiring and connectors not checked and replaced