P006B
MAP - Exhaust Pressure Correlation
The relationship between manifold absolute pressure and exhaust back pressure is implausible. One of the two pressure sensors is faulty or there is a major leak in either path.
The relationship between manifold absolute pressure and exhaust back pressure is implausible. One of the two pressure sensors is faulty or there is a major leak in either path.
Common causes
- high
Exhaust back-pressure sensor faulty
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-1650
- medium
DPF or exhaust path leak
A plausible cause — test and verify before replacing parts.
Typical part cost: $130-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P006B mean?
P006B means "MAP - Exhaust Pressure Correlation". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.
What are the most common causes of P006B?
exhaust back-pressure sensor faulty; dpf or exhaust path leak — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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