P008B OBD II Trouble Code Low Pressure Fuel System Pressure - Too High

How to quickly diagnose, repair, and info on symptoms and causes of a P008B code that means the low pressure fuel system pressure is detected as being too high.

Symptoms of P008B OBD II Trouble Code

  • Low power
  • Limited output
  • Abnormal throttle response
  • Decreased or increased fuel economy
  • Increased emissions
  • Sluggish
  • Engine noise
  • Hard start
  • Engine smoking on start-up

Common Causes of P008B OBD II Trouble Code

  • Dirty fuel
  • Fuel line or filter problem
  • Unstable fuel
  • Fuel injector defective
  • Weak low pressure fuel pump
  • Sludgy fuel (e.g. old, thick, contaminated)

Severity of P008B OBD II Trouble Code

High fuel pressures can and will cause issues in the future when diesel engines are concerned. I'd say severity would be set to moderate-high, because if you plan to drive your vehicle daily, and it's a diesel, you will need to make sure your fuel system is function adequately.