OBD Guide

P229A

Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too Low

P229A is an OBD-II diagnostic trouble code meaning: Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too Low. Common causes: fuel pressure regulator malfunction, fuel pump wear. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Engine stalls at idle
  • Poor engine starting
  • Loss of power when accelerating
  • Floating engine speed
  • Increased fuel consumption

Causes

  • Fuel pressure regulator malfunction
  • Fuel pump wear
  • Fuel filter clogged
  • Leak in the fuel system
  • Problems with wiring or connectors

How to Fix

  1. Check fuel pressure
  2. Inspect the fuel filter for clogging
  3. Check fuel pressure regulator
  4. Inspect fuel lines for leaks
  5. Check the condition of the fuel pump

Related codes

Error P229A by Vehicle Brand

FAQ

What does the P229A code mean?

P229A is an OBD-II diagnostic trouble code that indicates: Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too Low

What causes a P229A error code?

The most common causes of P229A include: Fuel pressure regulator malfunction; Fuel pump wear; Fuel filter clogged; Leak in the fuel system.

How do I fix a P229A diagnostic trouble code?

To fix P229A: Check fuel pressure. Inspect the fuel filter for clogging. Check fuel pressure regulator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P229A?

Limited driving only, diagnose soon

How much does it cost to fix P229A?

The estimated repair cost for P229A is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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