P0975
Shift Solenoid B Control Circuit Range/Performance
Transmission
Generic OBD-II
Medium
What it means
P0975 means the transmission control module sees shift solenoid B performing outside its expected range. This solenoid directs fluid to engage specific gears, so a fault shows up as harsh, delayed, or missed shifts and can force the transmission into limp mode. It's worth fixing promptly to avoid added wear.
Medium
Can I keep driving? Short trips only — the transmission may shift harshly, skip gears, or drop into limp mode; repair soon to avoid further wear.
Common symptoms
What you'll notice
- Harsh, delayed, or missed gear changes
- Transmission stuck in one gear or in limp mode
- Slipping between gears
- Check-engine light on
Common causes
Most likely first
- Failing shift solenoid BLikely
- Damaged, shorted, or corroded wiring or connector in the control circuitCommon
- Low or contaminated transmission fluidCommon
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition — low or dirty fluid disrupts solenoid operation.
- Read freeze-frame data and inspect the solenoid B connector and wiring for damage or corrosion.
- Measure shift solenoid B resistance against spec and replace it if out of range.
- If the solenoid and wiring test good, have the TCM diagnosed. Clear the code and road-test.
FAQ
Quick answers
Is it safe to drive with P0975?+
Only for short trips. Erratic shifting and slipping generate heat that wears the transmission, so get it repaired soon.
Can I just clear P0975?+
It will come back within a few drive cycles until the solenoid or its wiring is fixed.
Related codes
Often seen with P0975
Read & clear P0975 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX