AutoCodes – Generic – P229D

P229D Code - Fuel Pressure Regulator 2 Exceeded Learning Limits Too High

Quick Answer

The Powertrain Control Module (PCM) monitors the fuel pressure. Common causes include Faulty Fuel Pressure Regulator, Faulty Fuel Pump, Faulty Fuel Pressure Sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P229D indicates Fuel Pressure Regulator 2 Exceeded Learning Limits Too High.
Common causes: Common causes include Faulty Fuel Pressure Regulator, Faulty Fuel Pump, Faulty Fuel Pressure Sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,351

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P229D Description

The Powertrain Control Module (PCM) monitors the fuel pressure. The code is set when the PCM detects the fuel pressure out of factory specifications.

OBDII Code P229D - Fuel Pressure Regulator 2 Exceeded Learning Limits Too High - AutoCodes.com — P229D Code - Fuel Pressure Regulator 2 Exceeded Learning Limits Too High

What does this mean?

What are the Possible Causes of the DTC P229D?

Faulty Fuel Pressure Regulator
Faulty Fuel Pump
Faulty Fuel Pressure Sensor

How to Fix the DTC P229D?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P229D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P229D code?

Need more information on how to fix the P229D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P229D code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.