P229B Code - Fuel Pressure Regulator 2 Exceeded Control Limits Pressure 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
- P229B indicates Fuel Pressure Regulator 2 Exceeded Control Limits Pressure 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.
Code P229B Description
What are the Possible Causes of the DTC P229B?
- Faulty Fuel Pressure Regulator
- Faulty Fuel Pump
- Faulty Fuel Pressure Sensor
How to Fix the DTC P229B?
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 P229B 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 P229B code?
Need more information on how to fix the P229B code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P229B code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P229B Code
1. What does the OBDII code P229B mean?
P229B indicates that Fuel Pressure Regulator 2 has exceeded control limits, meaning the fuel pressure is too high.
2. What are the common symptoms of code P229B?
Symptoms include difficulty starting the engine, rough idle, reduced fuel efficiency, loss of power, and possible engine misfires.
3. What causes the P229B code to appear?
Common causes include a faulty fuel pressure regulator, issues with the fuel pump, clogged fuel lines, or a malfunctioning fuel pressure sensor.
4. Can I drive my car if the P229B code is active?
Driving with code P229B can lead to poor performance and potential engine damage. It's best to address the issue promptly.
5. How is a P229B code diagnosed?
Technicians typically use a scan tool to monitor fuel pressure data, inspect the fuel pressure regulator, and check for blockages in the fuel system.
6. How can I fix the P229B code?
Repairs may include replacing the fuel pressure regulator, cleaning or replacing the fuel pump, or repairing any damaged wiring or connectors.
7. Will clearing the code fix the P229B issue?
Clearing the code won't fix the underlying problem. The root cause must be diagnosed and repaired to prevent the code from returning.
8. Can a dirty fuel filter cause code P229B?
While unlikely, a clogged fuel filter can contribute to fuel pressure issues and should be inspected during diagnosis.
9. Is the P229B code linked to bad fuel quality?
Poor fuel quality can sometimes affect system performance, but it's not typically the primary cause of this code.
10. How much does it cost to repair a P229B code?
Repair costs vary depending on the exact issue but can range from $200 to $800 for parts and labor, depending on the vehicle and problem.
Discuss the causes and fixes for P229B OBDII Code
Code P229B comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
