DTC code reads P1651 and P1652. How to fix FC Relay control circuit 1 and 2.

Tiny
CMONEY
  • MEMBER
  • 1996 BUICK RIVIERA
I have a buick 96 riviera supercharge.60 amp fuse has been replaced.
Monday, September 5th, 2011 AT 5:14 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
P1651 (Fan Control Relay) and P1652 (Power train Induced Chassis Pitch Output Circuit)

Fan control relay may be according to some research a broken wire, you may have to do a continuity test down the loom, the other is something I have never come across and I am struggling to find any info on line, you may have to ask a dealer about that one.
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Wednesday, September 7th, 2011 AT 9:26 AM

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