Exhaust Pressure Too Low Bank 2
The exhaust pressure measured on bank 2 falls below the calibrated minimum. Common causes are leaks upstream of the sensor, missing DPF substrate, or sensor calibration drift.
Affected components
- Exhaust pressure sensor b2
- Particulate filter
- Exhaust system
Common causes
- High likelihood: Exhaust leak upstream of sensor
- Medium likelihood: Sensor zero point drifted
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.