Code 21 throttle position sensor high voltage, how do I fix this?

Tiny
GILBRO
  • MEMBER
  • 1990 CHEVROLET TRUCK
  • 5.0L
  • V8
  • 2WD
  • MANUAL
  • 150,000 MILES
Got a code 21 throttle position sensor high voltage. How do I fix this?
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Monday, September 18th, 2023 AT 5:26 PM

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Tiny
CARADIODOC
  • EXPERT
How is your knowledge of electrical theory, and do you know how to use a digital voltmeter? If you do not, I can help with that. This circuit is relatively simple, but I need to know where to start so we don't overlook anything. Here's the diagram we'll be using.
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Monday, September 18th, 2023 AT 6:07 PM

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