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Check engine light turned on, solenoid a and b

Tiny
BIG FACE
  • MEMBER
  • 2001 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 169,319 MILES
My check engine light is on, and it calls for solenoid a and b.
Is there another name for these solenoids I go on the AutoZone website and I type in solenoid a and that doesn't pop up.
Also, should I replace these solenoids or just replace the whole transmission? Thanks
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Tuesday, March 29th, 2022 AT 11:20 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,901 POSTS
Hi,

Are you referring to the transmission line pressure regulating solenoids? I believe those were in the 4-speed automatics, but not the 3-speed transmissions.

Also, it may simply be referred to as the transmission solenoid which is responsible for line pressure and overdrive lock-up.

Do me a favor. What codes were found? That will point me in the right direction.

Let me know.

Joe
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Tuesday, March 29th, 2022 AT 8:07 PM

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