What is the fault code P006B? What is the description of the MAP – Exhaust pressure Sensor Correlation error? How do I fix the P006B fault code What are the causes and symptoms of the P006B error code?
What is the P006B Fault code? What does it signify?
If the powertrain control module, PCM detects an inconsistency among the signals from both the manifold absolutepressure (MAP) and the signals coming from the exhaust pressure sensor(EPS), a code P006B will be triggered.
The MAP sensor can also be called the barometric pressure sensors in some vehicles. The sensor measures the intake manifold’s air pressure in kilopascals, or mercury (Hg). This information is transmitted to the PCM in the form of a voltage signal.
Diesel engines use several exhaust pressure sensors to monitor exhaust backpressure. Exhaust backpressure is a good indicator of catalyst efficiency and diesel particulate filter efficiency. Emissions reduction and engine performance are both affected by the exhaust back pressure.
If the PCM detects a deviation in the signals of these sensors for a period of time, fault code 006B is recorded.
Before diagnosing P006B, it is necessary to correct any other fault codes that may have been set for the MAP sensor or exhaust pressure sensor.
What is the P006B Fault code?
- – Defective exhaust Pressure Sensor
- – Defective MAP sensor
- Circuit problems with either the MAP sensor/or the exhaust sensor (damaged wires or loose connectors), open or short circuits
- Vacuum leak
- – The PCM is defective or needs software updating
What are the symptoms for P006B’s Fault Code?
- – Illumination for check engine light
- Low engine performance
- – An increase in fuel consumption
- Excessive smoke from exhaust
- – Exhaust system rich or lean
How do I fix the P006B fault code?
- Visually inspect all cables. All wires must be inspected for any loose or twisted connectors.
- Road tests should be performed to verify that codes have been cleared.
- – Test the reference voltage of the MAP or exhaust pressure sensor (5 Volts).
- – Replacing the defective MAP sensor
- – Replacing a defective exhaust pressure sensor
- – Reprogramming the PCM or replacing it
How Serious Is the P006B Fault code?
These two sensors are crucial to engine efficiency and performance. It is imperative that the P006B fault codes be rectified immediately.
