1998 Lincoln Town Car CODE P0172, PO175

Tiny
JBLU069
  • MEMBER
  • 1998 LINCOLN TOWN CAR
  • V8
  • 2WD
  • AUTOMATIC
  • 211,000 MILES
SYSTEM TO RICH BANK1, BANK 2---- HOW DO I TROUBLESHOOT THESE CODES, WHAT PROBLEMS SHOULD I LOOK 4, WHAT PARTS CAN BE DEFECTIVE
Friday, September 25th, 2009 AT 6:29 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi there jblu069 and TY for the donation this is what keeps the site going

P0172/P0175 system too rich:

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Friday, September 25th, 2009 AT 6:38 PM

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