OBD-II Code · Transmission
P0778
Pressure Control Solenoid B Electrical
high severityDo not drive$300-$1,500
Pressure control solenoid B electrical fault.
Common symptoms
- Harsh shifts
Likely causes
- Wiring
- Failed solenoid
Where to start
- Try the cheapest cause first. Start by checking: wiring.
- Cost & scope. $300-$1,500
- If the code returns after the fix: escalate to a shop or scanner with live-data and freeze-frame. A code that re-sets means the underlying fault is still there. Don't keep driving with this one active — risk of damage.
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