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.
Affected components
- Map sensor
- Exhaust pressure sensor
Common causes
- High likelihood: Exhaust back-pressure sensor faulty
- Medium likelihood: DPF or exhaust path leak
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.