P00B8 Fault Code

MAP - Mass or Volume Air Flow Correlation Bank 2

• What does that mean?
• Symptoms
• Causes
• Solutions

The P00B8 fault code indicates an issue with the Mass or Volume Air Flow (MAF/VAF) correlation specifically for Bank 2. This code typically arises when the engine control module (ECM) detects that the airflow readings from the MAF sensor on Bank 2 do not match expected values based on engine parameters. This discrepancy can affect engine performance, fuel efficiency, and emissions.

What are the symptoms of the P00B8 code?

Symptoms associated with P00B8 may include:

• Check Engine Light illuminated
• Decreased engine performance
• Rough idling or stalling
• Increased fuel consumption
• Unusual smells from exhaust or poor emissions under test conditions.

What causes the P00B8 code?

Several factors can lead to the P00B8 code, including:

• Faulty MAF sensor or its wiring
• Air intake leaks or obstructions
• Incorrectly calibrated or damaged ECM
• Issues with the intake system, such as a clogged air filter
• Vacuum leaks in the intake manifold
• Problems within the engine itself, such as cylinder misfiring or poor combustion.

How to fix P00B8?

To resolve the P00B8 code, the following steps are recommended:

• Inspect and replace the MAF sensor if faulty
• Check the intake system for leaks and repair as necessary
• Clean the MAF sensor with appropriate cleaner if contaminated
• Inspect wiring and connectors for damage and repair as needed
• Verify that the ECM is functioning correctly and perform a reset if necessary
• Replace the air filter if it is clogged or severely dirty.