Check engine light turned on, solenoid a and b

2001 TOYOTA COROLLA
169,319 MILES • 4 CYL • 2WD • AUTOMATIC
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BIG FACE
  • MEMBER
  • 1 POST
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
Mar 29, 2022 at 4:20 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 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
Mar 29, 2022 at 1:07 PM
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