Harsh shift while accelerating and code P2716

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2005 PONTIAC VIBE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 233,577 MILES
Good evening, the vehicle is experiencing harsh shift while changing gears. I have scanned the vehicle the codes found on it memory is P2716. How will I know the exact solenoid and what else should be checked for?
I don't know if you could also help me with the circuit diagram, from the PCM to the solenoid.
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Monday, August 30th, 2021 AT 2:40 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Based on the code and your description, there is either an open circuit or short to ground in the line pressure control circuit. The line pressure solenoid valve controls the transaxle line pressure for smooth transaxle operation based on signals from the throttle position (TP) sensor and the vehicle speed sensor (VSS). If the shift is harsh, the pressure is likely too high.

If you look at the first two pics below, I provided the wiring schematic. It was a page long, but I had to cut it in half to make it readable for you. I did overlap them and highlighted the wires related to the solenoid and where they connect at the PCM.

The remaining pics are the diagnostics related to the code you provided. Take a look through them and let me know if you are comfortable doing them.

Let me know what you find or if you have other questions. Also, here is a link you may find helpful:

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

Take care,

Joe

See pics below.
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Tuesday, August 31st, 2021 AT 7:24 PM
Tiny
BLESSING EWOBOR
  • MEMBER
Thank you very much.
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Sunday, September 5th, 2021 AT 3:21 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

You are very welcome. If you have a chance, let me know the outcome.

Take care,

Joe
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Sunday, September 5th, 2021 AT 6:35 PM
Tiny
BLESSING EWOBOR
  • MEMBER
It has been fixed, one of the wires had open circuit. Thank you
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Friday, September 10th, 2021 AT 4:48 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Glad to hear you found the issue. That's good news.

You take care and feel free to come back anytime in the future.

Take care,

Joe
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Friday, September 10th, 2021 AT 8:23 PM
Tiny
BLESSING EWOBOR
  • MEMBER
Thank you.
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Sunday, September 12th, 2021 AT 6:02 PM

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