Random misfire and codes P0300, P0303 and P0304

Tiny
MILINTHOSANI
  • MEMBER
  • 2012 VOLKSWAGEN TIGUAN
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 74,000 MILES
I am getting P0300 P0303 and P0304 error codes.
I changed all the spark plugs and Ignition coils. Still I see the same problem. Please help.
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Friday, July 31st, 2020 AT 6:26 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

These codes can be the result of a few things. Engine vacuum leaks, fuel pressure, along with other things can cause them.

Since the vehicle only had 74,000 on it, I can't imagine it is a compression issue. So, lets start by checking to see if there are any leaks that could be causing it. Here is a link that explains how to check for engine vacuum leaks:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, make sure the air induction tube between the air box and the throttle body is properly installed.

Let me know what you find

Joe
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Friday, July 31st, 2020 AT 10:15 PM

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