Will not start and codes p1128, 422, 134 and 303

2000 VOLKSWAGEN BEETLE
138,675 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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#1SAINTSFAN
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  • 16 POSTS
something keeps dragging the battery down. i have checked the alternator and battery all good car. wont start it has a p1128 , 422,134 codes and 303. what do I do next to fix this car?
Oct 8, 2019 at 9:38 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Welcome to 2CarPros.

You have a few things happening here. First, does the starter engage and turn the engine? Have you checked for spark and for fuel pressure?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Next, the P1128 indicates a very lean fuel mixture. Basically, either the fuel pump isn't supplying enough pressure or there is a major vacuum leak. Here is a link dealing with finding a vacuum leak:

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

The P0422 deals with a catalytic converter issue. Was the vehicle lacking power prior to it not running?

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

The P0134 indicates bank 1 oxygen sensor 1 is not working. Check to see if it is unplugged or the wiring is damaged.

Let me know if any of this helps.

Joe
Oct 11, 2019 at 9:59 AM
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