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Can a bad ignition switch affect the OBD system.

Tiny
PRIMUS007
  • MEMBER
  • 1996 FORD F-150
  • 18,000 MILES
Can a bad ignition switch affect the obd system no reading
Thursday, November 10th, 2011 AT 12:41 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It wont throw a code but can cause issue if it does not power up the pcm. What problems are you having?

Roy
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Thursday, November 10th, 2011 AT 12:43 AM
Tiny
PRIMUS007
  • MEMBER
  • 2 POSTS
No reading but check engine light is not on
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Thursday, November 10th, 2011 AT 12:53 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Check the fuses for the pcm. If they are good, you may have a failed pcm

Roy
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Thursday, November 10th, 2011 AT 1:05 AM

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