Transmission code
P0776: Transmission pressure solenoid B stuck off
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $60 | $400 |
| Labor: 2 to 5 hours × $125 to $175 an hour | $250 | $875 |
| Fees: shop supplies, disposal, diagnostics | $15 | $40 |
| Total, rounded | $320 | $1,325 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, transmission solenoid replacement. Which repair your car needs depends on a proper diagnosis.
The transmission uses solenoids to control the fluid pressure that applies the clutches. Pressure solenoid B is not delivering the pressure the computer asked for and appears stuck in the off position. The gearbox can slip, shift late or shift hard because the clutches get the wrong pressure.
- Safe to drive?
- No, get it looked at first
- Most common cause
- Failed pressure control solenoid
Avoid driving. Slipping can burn the clutches and turn a smaller repair into a rebuild.
What you may notice
- Slipping between gears
- Harsh or delayed shifts
- Stuck in one gear
- Check-engine light
Common causes, most likely first
- Failed pressure control solenoid
- Dirty or worn fluid
- Worn valve body
- Wiring or connector fault
Check this first
Check the fluid level and color if your car has a dipstick. A burnt smell or dark fluid with metal specks means more than a solenoid, so tell the shop about it up front.
Other repairs that sometimes fix P0776
| Repair | Typical range, Boston |
|---|---|
| Transmission fluid service | $150 to $520 |
| Transmission rebuild or replacement | $3,100 to $6,800 |
| Diagnostic scan (check engine light) | $60 to $290 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Massachusetts rules require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0776 questions
Will fresh fluid fix it?
It can help if the fluid was old, but a stuck solenoid needs replacement. Fresh fluid will not free a stuck part, though it may protect other parts from more wear.
Is a rebuild needed?
Only if the transmission has been damaged by slipping. If the fault is caught early and the solenoid is swapped, many transmissions go on working for years without a rebuild.
Is the solenoid pricey?
The part itself is moderate, and labor is the larger share because the pan comes off and sometimes the valve body has to be removed. Ask for the labor hours in writing before agreeing.
How much does it cost to fix P0776?
The most common fix, transmission solenoid replacement, has a typical range of $320 to $1,325 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Related codes
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Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.