Shift Solenoid B Control Circuit Low
What it means
P0976 means the transmission control module sensed low voltage on the control circuit for shift solenoid B. Shift solenoids route hydraulic pressure to engage gears, so a circuit fault can cause missed shifts or force the transmission into a protective failsafe (limp) mode. It's usually a failed solenoid or a short in its wiring, sometimes low fluid.
Can I keep driving? Limited — the transmission may not shift normally or may drop into limp mode (fixed gear); drivable short distances but repair it before it strands you.
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
- Transmission won't shift through all gears
- Stuck in limp/failsafe mode (often one fixed gear)
- Harsh shifting or slipping
- Check-engine light on
Common causes
Most likely first
- Failed shift solenoid BLikely
- Wiring fault in the solenoid circuit (short to ground or open)Common
- Loose or corroded connector at the transmissionCommon
- Low or dirty transmission fluidLess often
- Faulty transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check transmission fluid level and condition.
- Inspect the transmission connector and wiring to shift solenoid B for shorts, opens, and corrosion.
- Measure shift solenoid B resistance against spec; replace if it reads open, shorted, or out of range.
- Repair any damaged wiring, clear the code, and road-test through all gears.
- If solenoid and wiring check out, have the TCM tested.
FAQ
Quick answers
Is it safe to drive with P0976?+
Can I just clear P0976?+
Related codes
Read & clear P0976 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.