Volkswagen Passat P Codes (Powertrain) P0400 - P0499

Browse Volkswagen Passat P Codes (Powertrain) P0400 - P0499 questions and answers. Choose a question that matches your symptoms.

7 discussions

2004 Volkswagen Passat PO421 Bank 1

2004 VOLKSWAGEN PASSAT

Hello, Check Engine Light Has Been Coming On And Turning Itself Off For The Last Few Months. It Is Steady, Not Blinking. I Was Told If...

3 ANSWERS

Asked by RSM

2003 VOLKSWAGEN PASSAT

I Have A Leak Detection Pump That Is Connected To Engine Vacuum To Open The Switch From The Leak Detection Pump. Can An Engine Vacuum Leak...

1 ANSWER

2 IMAGES

Asked by Ifyuser

2003 VOLKSWAGEN PASSAT

What Is The Problem With This Car And Are They Related?

1 ANSWER

9 IMAGES

Asked by Ifyuser

2003 VOLKSWAGEN PASSAT

I Know A Lot About Car Mechanics But I Can't Figure It Out. I Am Getting A P0456 And P0431. I Know You Have To Use A Smoke Machine But I...

1 ANSWER

15 IMAGES

Asked by Ifyuser

2003 VOLKSWAGEN PASSAT

I Have The Car Listed Above With A 2.8 Liter Engine. Code P0431 The Guy Said The Pid For Downstream Sensor Was Fluctuating And That It...

2 ANSWERS

7 IMAGES

Asked by Ifyuser

2003 VOLKSWAGEN PASSAT

I Bought My Car At An Auction So I Did Not Know Anything About It Or What It Had Been Through. So When I Picked It Up No Water In The...

5 ANSWERS

Asked by Mariah_parker

2001 VOLKSWAGEN PASSAT

Whats The Fix For Obd Code P0411 (2nd Air Inj. Sys. Incorrect Flow)?

2 ANSWERS

1 IMAGE

Asked by thoms1

Browse by repair topic

Can’t find your issue?