OBD Guide

P008B

Low Pressure Fuel System Pressure - Too High

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Loss of engine power
  • Unstable idling
  • Increased fuel consumption
  • Difficulty starting the engine

Causes

  • Fuel pressure regulator malfunction
  • Clogged fuel lines
  • Problems with the low pressure fuel pump
  • Fuel pressure sensor malfunction
  • Damage to the fuel system wiring harness

How to Fix

  1. Check the pressure in the low pressure fuel system using a pressure gauge
  2. Inspect fuel lines for blockages or damage
  3. Check the operation of the fuel pressure regulator
  4. Diagnose the low pressure fuel pump
  5. Check the fuel pressure sensor and its wiring harness
  6. If necessary, replace faulty components

Related codes

Error P008B by Vehicle Brand