Transmission code
P0700: Transmission computer reports a fault
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $0 | $0 |
| Labor: 0.5 to 1.5 hours × $125 to $175 an hour | $63 | $263 |
| Fees: shop supplies, disposal, diagnostics | $0 | $25 |
| Total, rounded | $60 | $290 |
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, diagnostic scan (check engine light). Which repair your car needs depends on a proper diagnosis.
This code is a flag, not a diagnosis. The transmission computer stored its own fault and asked the engine computer to turn on the check-engine light. The details are in the transmission module's own codes, so a basic scan of just the engine computer will not show them.
- Safe to drive?
- Short trips only
- Most common cause
- Shift solenoid fault
Drive gently if shifts feel normal; if it slips, bangs into gear or sticks in one gear, stop driving it.
What you may notice
- Rough or late shifting
- Stuck in one gear
- Check-engine light on
Common causes, most likely first
- Shift solenoid fault
- Low or dirty transmission fluid
- Failing speed or pressure sensor
- Wiring problem
- Internal transmission wear
Check this first
Check the transmission fluid level and color if your car has a dipstick, and ask for the transmission-specific codes to be read.
Other repairs that sometimes fix P0700
| Repair | Typical range, Boston |
|---|---|
| Transmission fluid service | $150 to $520 |
| Transmission solenoid replacement | $320 to $1,325 |
| Transmission speed / range sensor replacement | $120 to $490 |
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).
P0700 questions
Why is this code so vague?
It only reports that the transmission has logged a problem somewhere. The actual cause shows up in the transmission module's own stored codes, so ask the shop to scan that module and not only the engine.
Can a fluid service fix it?
Sometimes. If the fluid is low, burnt or old, fixing that can clear shift problems and the code. A fluid service is not a cure for worn internal parts, so check the level and color before paying for a big job.
Should I drive it?
If the car shifts normally, short gentle trips are usually okay. If it slips, will not shift out of a gear or bangs between gears, stop driving it and have it towed, since more driving can add damage.
How much does it cost to fix P0700?
The most common fix, diagnostic scan (check engine light), has a typical range of $60 to $290 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
P0700 repair cost by city
Related codes
- P0741: Torque converter clutch not locking
- P0500: Vehicle speed sensor signal problem
- P0562: System voltage low
- P0521: Oil pressure sensor signal out of range
More transmission codes
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.