DOBD DashX Browse all codes Blog
P0758

Shift Solenoid B Electrical

Transmission Generic OBD-II Medium

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.

Medium

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

Seen in
86
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults

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

Common causes

Most likely first

  1. Faulty shift solenoid B
  2. Open, short, or corrosion in the solenoid B wiring or connector
  3. Low or dirty transmission fluid
  4. Transmission control module (TCM) fault

How to diagnose & fix

Work through it in order

  1. Read freeze-frame data and note whether the trans is in limp mode.
  2. Check transmission fluid level and condition first.
  3. Inspect the solenoid B wiring and connector for opens, shorts, and corrosion.
  4. Measure the solenoid's resistance against spec; replace it if out of range.
  5. If wiring and solenoid check out, suspect the TCM. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0758?+
Only briefly. The transmission may be locked in a default gear, giving harsh or limited shifting. Driving far in limp mode adds heat and wear, so get it fixed soon.
Can I just clear P0758?+
It returns as soon as the module rechecks the solenoid circuit. The wiring, connector, or solenoid has to be repaired.

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.

▶ Get it on Google Play
Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX