Code P0090, full interpretation?

Tiny
ABAYA
  • MEMBER
  • 2010 CHEVROLET CAPTIVA
  • 2.0L
  • 4 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 124,000 MILES
After replacement of the fuel regulator, the engine won't accelerate.
Friday, January 24th, 2025 AT 8:47 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yep, it looks like you have defective part or the electrical connector or is not on completely or there is a bad connection and the regulator.

P0090 - Fuel Pressure Regulator Control Circuit Open

Here is the correct way to replace the part and its location for clarity. Check out the images (below). Please let us know what happens. Clear the codes once completed.
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Friday, January 24th, 2025 AT 11:10 AM
Tiny
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If the DTC P0090 concern fuel pressure regulator control circuit open. Why does I repair the pressure sensor connector? Is it not the regular connector who must be repaired? Please excuse my understanding. Thank you very much.
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Sunday, January 26th, 2025 AT 10:27 AM
Tiny
KEN L
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Did you see the images above, is this the part you replaced?
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Monday, January 27th, 2025 AT 9:15 AM
Tiny
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The fuel pressure sensor in my car is placed on the common rail. It had 3 wires. The part I replaced is the fuel pressure regulator which is mounted on the high pressure pump.
Thank you Mr. Ken.
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Monday, January 27th, 2025 AT 10:04 AM
Tiny
KEN L
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I would check the high-pressure pump camshaft lobe. These have a tenancy to wear down which will make the engine have no power. Can I ask why you replaced the regulator? Was it because of the code? Check out the images (below). Please let us know what happens.
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Tuesday, January 28th, 2025 AT 9:30 AM
Tiny
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Hi, yes sir, it was helpfull.
Thank you very much.
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Wednesday, January 29th, 2025 AT 12:32 AM
Tiny
KEN L
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So is the problem fixed or are you still working on it?
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Wednesday, January 29th, 2025 AT 8:42 AM
Tiny
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Yes for the dtc P0090. Thank you Mr. Ken.
Now, remain the dtc P0089. Please help me to resolve it.
Thank you.
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Wednesday, January 29th, 2025 AT 12:08 PM
Tiny
KEN L
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Can I ask what fixed the Code P0090?
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Thursday, January 30th, 2025 AT 11:52 AM

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