Error Code P00BC: What It Means & What To Do?

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A sudden increase in the fuel consumption and the engine performance along with occasional engine stalling and not starting with improper throttle response may be an indication of problem with the Air intake system hampering the engine’s performance, thus indicating OBD Code P00BC.

OBD-II Code Decreased engine performance is defined as a Mass or Volume Air Flow "A" Circuit Range/Performance – Air

The Mass Airflow Sensor (MAF) measures the amount of air entering the engine. The engine control module (PCM) uses this information to determine how much fuel to use to keep the engine running properly. When the PCM detects a problem with this sensor or the circuit for the sensor, it will set code P00BC.

What causes problem with the Mass Air Flow Sensor?

• Faulty or damaged MAF (Mass Air Flow) sensor
• Leakage in the Air Intake System
• Open, shorted, frayed, or poor connection of the electrical wirings to the sensor and circuit
• PCM being faulty and taking wrong readings
• Clogged/broken intake/inlet pipe

1. Engine Control Module - OBD Error Code P00BC can also be due to faulty ECMs. Replace faulty components immediately.
2. Powertrain Control Module - P00BC 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.
3. Diagnostic Tool - Make use of professional scan and diagnostic tools to detect and correct the OBD code error.
4. Auto Switches & Sensors - Defective switches or faulty sensors can also cause OBD error to flash. So, replace them now.
5. Air Temperature Sensor - The Air Temperature sensor are usually exposed to air entering the engine. As it is a very important step in combustion, this sensor plays a crucial role in the performance. Replace faulty sensor now!
6. Air Intake Kits - Air intake system checks on the proper air to fuel ratio entering the engine. Buy quality air intake kits from us to boost the engine performance.
7. Mass Air Flow Sensor - A faulty mass airflow sensor will cause problems of engine not starting or hard idle and loss of power. Replace damaged/faulty MAF sensors today!

Symptoms of OBD code P00BC are as follows:

Common Symptoms

• Malfunction indicator lamp (MIL)/Check Engine Light illumination
• Rough running engine
• Black smoke dispersing from tailpipe
• Hard start or stalling of engine
• Poor throttle response and acceleration
• Decreased fuel economy

The main components to look for error and correct the OBD error are following;

• Damaged Intake Manifold Gasket
• Faulty Mass Airflow Sensor
• Dirty Air Filter

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The first step for the P00BC diagnostic code is to check for Technical Service Bulletins (TSBs) that apply to your year/make/model/engine, and then visually inspect the wiring and system components.

• Do visual inspection of all MAF sensor wiring and connectors to make sure they are intact, not frayed, broken, routed too close to ignition wires/coils, relays, motors, etc.
• Check for any obvious air leaks in the air intake system.
• Inspect the MAF sensor wires or film for any contamination such as dirt, dust, oil, etc., and clean the MAF and the air intake system mesh.
• Check for vacuum leaks to the MAP sensor, as it can also trigger this DTC.
• Use a scan tool to monitor real-time sensor values from the MAF sensor, O2 sensors, etc.
• The barometric pressure (BARO) that is used in order to calculate the predicted MAF value is initially based on the MAP sensor at key ON.
• Do an exhaust back pressure test to determine if the catalytic converter is clogged or not.
• Repair faulty PCM sensor that may require reprogramming.
• Replace Leaky and damaged intake/inlet pipe immediately
• Faulty MAF (Mass Airflow Sensor) needs replacement as it directly hampers the engine performance.

Common mistakes when diagnosing the P00BC code

By far, the most common cause of a P00BC being stored is a disconnected MAF sensor. When the air filter is checked or replaced, the MAF sensor is often left disconnected. If your vehicle has recently been service, and a code P00BC is suddenly stored, suspect that the MAF sensor has simply been left unplugged.

Some of the common mistakes done while changing diagnosing the OBD code P00BC are:

• Intake manifold leak
• Mass Air Flow (MAF) sensor failure
• Powertrain Control Module (PCM) failure
• Wiring issue.