OBD Guide

P28F8

Exhaust Pressure Too High Bank 2

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Rough engine operation
  • Check Engine Light Illuminates
  • Noise from the exhaust system

Causes

  • Clogged catalytic converter
  • EGR system malfunction
  • Problems with the exhaust gas pressure sensor
  • Clogged particulate filter (for diesel engines)
  • Mechanical damage to the exhaust system

How to Fix

  1. Check the condition of the catalytic converter
  2. Diagnose the EGR system
  3. Check exhaust pressure sensors
  4. Inspect the exhaust system for damage
  5. If necessary, replace faulty components

Related codes

Error P28F8 by Vehicle Brand