OBD Guide

P229C

Fuel Pressure Regulator B Exceeded Learning Limits - Too Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Misfires
  • Reduced engine power
  • Increased fuel consumption
  • Difficulty starting the engine

Causes

  • Fuel pressure regulator malfunction
  • Problems with the fuel pump
  • Fuel filter clogged
  • Damage to fuel lines
  • Fuel pressure sensor malfunction

How to Fix

  1. Check the fuel pressure in the system
  2. Inspect fuel lines for damage
  3. Replace the fuel filter if necessary
  4. Check the operation of the fuel pump
  5. Replace the fuel pressure regulator if necessary

Related codes

Error P229C by Vehicle Brand