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1998 Volkswagen Cabriolet P0171 Engine Code "ON"

Tiny
DOGALINA
  • MEMBER
  • 1998 VOLKSWAGEN CABRIOLET
What is the most probable cause for this OBD?

Replaced worn out rubber hoses, have not replaced O2 sensor or MAF sensor.

How to check for faulty Sensors?
Thursday, October 9th, 2014 AT 6:19 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Possible causes

- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
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Friday, October 10th, 2014 AT 2:14 AM

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