Shift Solenoid B Electrical
What it means
P0758 means the transmission control module detected an electrical fault — an open or short — in the shift solenoid B circuit. This solenoid directs hydraulic pressure to engage a gear; when its circuit fails, the module can't control that shift and often drops the transmission into a default limp-mode gear. It won't stop the engine from starting, but shifting will be harsh or restricted.
Can I keep driving? Often puts the transmission into a fixed-gear limp mode — you can usually drive it to a shop, but shifts may be harsh or locked, so keep the trip short.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Harsh or delayed shifts
- Stuck in one gear or limp mode
- Transmission slipping
- Check-engine light on
Common causes
Most likely first
- Faulty shift solenoid BLikely
- Open, short, or corrosion in the solenoid B wiring or connectorCommon
- Low or dirty transmission fluidCommon
- Transmission control module (TCM) faultLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and note whether the trans is in limp mode.
- Check transmission fluid level and condition first.
- Inspect the solenoid B wiring and connector for opens, shorts, and corrosion.
- Measure the solenoid's resistance against spec; replace it if out of range.
- If wiring and solenoid check out, suspect the TCM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0758?+
Can I just clear P0758?+
Related codes
Read & clear P0758 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.