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Code P0650?

Tiny
DARTH327
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
Some partially melted wire harness connectors on top of the engine. No obvious separations. Need to know which wire [ harness segment, color] to start inspection for mil.[ No mil, p0650] small fire under plastic engine cover about 100 miles ago. Runs good, but I'm weak in electrical issues.
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Friday, September 1st, 2023 AT 1:38 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
The P0650 trouble code is a generic powertrain code that indicates a malfunction in the "Malfunction Indicator Lamp (MIL) Control Circuit." In simpler terms, it means there's a problem with the circuit responsible for controlling the Check Engine Light (MIL) on your vehicle. Here are the wiring diagrams and the wire colors to repair and get the circuit working again.

This guide can help check the connections:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know what happens.
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Saturday, September 2nd, 2023 AT 4:37 PM

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