Exhaust Pressure Too High Bank 2
The exhaust pressure measured on bank 2 exceeds the calibrated maximum. Common causes are clogged DPF, restricted exhaust path, or stuck exhaust brake/back-pressure valve.
Affected components
- Exhaust pressure sensor b2
- Particulate filter
- Exhaust system
Common causes
- High likelihood: DPF clogged with soot or ash
- Medium likelihood: Back-pressure valve stuck closed
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Related codes
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.