Codes p00c6, p228c, p00c6, p228c, P0016, p0228d, P0191 and P0192, high pressure Fuel pump?

Tiny
KINGJD123
  • MEMBER
  • 2017 GMC TERRAIN
  • 2.4L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
When I try to start it, it will struggle to turn over. When it does it will rev high then go low and shutter. If I drive it the display shows reduced engine power the codes I pulled were in this order p00c6 p228c p00c6p228c p0016 p0228d p0191 and p0192 it doesn't sound like timing is off as I just did chains and new guide and tensioner and all of the colored links lined up I'm thinking high pressure fuel pump it has been sitting for at least 6 months thoughts?
Monday, August 28th, 2023 AT 6:33 PM

13 Replies

Tiny
KEN L
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So, these codes have to do with a couple different systems, but we should concentrate on the fuel rail pressure sensor first and the accelerator pedal position sensor.

P00C6: This code refers to a fault in the fuel rail pressure sensor circuit.

P228C: This code indicates a problem with the fuel pressure regulator control performance.

P0016: This code is related to the camshaft position sensor's correlation with the crankshaft position sensor.

P0228D: It appears there might be a typo in this code, as P0228 is related to the throttle/pedal position sensor/switch "C" circuit.

P0191: This code indicates a problem with the fuel rail pressure sensor's performance.

P0192: Similar to the previous code, this one also relates to the fuel rail pressure sensor, but it suggests that the signal from the sensor is too high.

Here is how to change the fuel pressure sensor and accelerator pedal sensor out. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Tuesday, August 29th, 2023 AT 1:07 PM
Tiny
KINGJD123
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Changed fuel pressure sensor and same.
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Tuesday, August 29th, 2023 AT 3:14 PM
Tiny
KEN L
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Thanks for the video, did you clear the codes and if so, do you still have the P00C6 code? You may have a bad PCM, also when you are cranking the engine over does the security light flash? Also, we need to change out the accelerator pedal and clear the codes. Then turn the key on without cranking the engine over and run the codes again.
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Wednesday, August 30th, 2023 AT 10:04 AM
Tiny
KINGJD123
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Cleared it didn't change pedal yet waiting on part but no security light when cranking and when I cleared it I turned key on no c6 but turned the car on and c6.
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Friday, September 1st, 2023 AT 9:57 AM
Tiny
KINGJD123
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Also, P228D the results I got to this code was Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too High.
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Friday, September 1st, 2023 AT 10:07 AM
Tiny
KEN L
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Okay, let me know what happens after the accelerator pedal replacement. The P228D trouble code is a generic powertrain code that indicates a problem with the fuel pressure regulator control circuit. So, the sensor should have taken care of that. Did you clear the codes after the replacement?
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Saturday, September 2nd, 2023 AT 10:16 AM
Tiny
KINGJD123
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Replaced it no luck same code.
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Saturday, September 23rd, 2023 AT 9:34 AM
Tiny
KEN L
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I have seen the high-pressure fuel pump go out and cause this problem because it will back feed the low-pressure fuel system, also when the pump is removed inspect the camshaft lobe to see if there is damage. Here is how to do the job.
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Sunday, September 24th, 2023 AT 10:10 AM
Tiny
KINGJD123
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Replaced that already same problem but it feels like its definitely fuel related it will stutter and only start if accelerator is on the ground and the second you let up it shuts off. I also did a compression test. All are 205-210 the valve cover gets smokey and when I pull intake off smoke comes out slowly.
When the car is on it says engine reduced power.
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Sunday, September 24th, 2023 AT 10:18 AM
Tiny
KEN L
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Okay, so clear the codes and then crank the engine over and let it start and then shut it off quickly and then run the codes again and let me know what codes come up.
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Monday, September 25th, 2023 AT 8:45 AM
Tiny
KINGJD123
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Okay, cleared codes and wouldn't start first that comes up is p00c6 then p228c then p0016, p00191, and p0192.
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Monday, September 25th, 2023 AT 10:12 AM
Tiny
KEN L
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Okay, the p00c6 is a circuit code so we need to check the wiring between the fuel pressure sensor and the PCM, this guide can help. Also, I have included the engine and fuel rail sensor wiring diagrams so you can see how the system works and which wires to test.

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

If the wiring is okay the PCM is bad, please go over this guide and the PCM location is in the images below as well, you can get a preprogrammed unit by searching Google or Ebay.

https://www.2carpros.com/articles/how-to-replace-an-automotive-engine-computer-pcm-ecm-ecu-a-comprehensive-step-by-step-guide

Check out the images (below). Please let us know what happens.
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Tuesday, September 26th, 2023 AT 11:10 AM
Tiny
KEN L
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Anything?
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Monday, May 6th, 2024 AT 7:23 PM

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