OBD Guide

P228B

Fuel Pressure Regulator B - Forced Engine Shutdown

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$28–89 (est.)

Symptoms

  • The engine stalls or does not start
  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Fuel pressure regulator B malfunction
  • Problems with the regulator electrical circuit
  • Regulator contamination
  • Fuel pump malfunction
  • Problems with the engine ECU

How to Fix

  1. Check the electrical circuit of the fuel pressure regulator
  2. Check the functionality of the fuel pressure regulator
  3. Clean or replace fuel pressure regulator
  4. Check the operation of the fuel pump
  5. If necessary, replace the fuel pressure regulator

Related codes

Error P228B by Vehicle Brand