What P0700 means for your Toyota Tacoma
The Tacoma uses a series of Aisin transmissions - the older A750F 5-speed in 2005-2015 and the newer AC60E 6-speed in 2016+. Both are robust but have specific fluid and TPS issues. P0700 is the "umbrella" code that tells you the TCM has stored at least one other transmission-related fault. Always pull the full code list, not just P0700, when diagnosing.
Top Causes on the Toyota Tacoma
Cause percentages are AmpAuto estimates based on TSB review, owner forum patterns, and shop data. Your vehicle may differ. Always confirm with a full scan before purchasing parts.
Most Affected Tacoma Model Years
| Year | Engine/Trans | Primary Cause | Typical Mileage | Notes |
|---|---|---|---|---|
| 2016-2020 | 3.5L V6 / AC60E | Software, TSB T-SB-0024-20 | 20k-80k | Most common P0700 cluster |
| 2005-2015 | 4.0L V6 / A750F | Solenoid wear | 130k-200k | High-mileage Tacomas |
| 2021-2024 | 3.5L / AC60E updated | Software calibrations | 10k-50k | Multiple reflash campaigns |
Is It Safe to Drive Your Toyota Tacoma with P0700?
How to Diagnose P0700 on a Toyota Tacoma
- Pull the full sub-code list, not just P0700. P0700 alone tells you nothing - the TCM stores it whenever any other trans code is active. Look for codes in the P0730-P0799 range and the P0840-P0899 range.
- Check TSBs and recalls against your VIN. The AC60E / A750F / AB60F / 6-speed has documented service bulletins. A free dealer reflash resolves many P0700 cases without parts.
- Verify fluid level and condition. Wrong fluid or low fluid is the #1 cause of P0700 across nearly every modern automatic. Confirm fluid spec from the door jamb or owner's manual before any service.
- Inspect the pan magnet for ferrous debris. Heavy metallic shavings mean internal wear; a fluid service alone will not save the transmission. Plan for a reman if you see significant debris.
Common Questions About P0700 on the Toyota Tacoma
Is Toyota Type WS fluid really lifetime?+
Toyota says yes; the aftermarket trans community disagrees. Drain-and-fill every 60k-80k miles is the consensus for towing or hot climates. Use only Toyota Type WS (part 00289-ATFWS) or an equivalent JWS3324 spec fluid.
Why is the 2016-2020 Tacoma 6-speed hesitating?+
It is a known software-tuning issue - the AC60E in 3.5L Tacomas was programmed for fuel economy at the expense of drivability. TSB T-SB-0024-20 and follow-ups improve it. Many owners report a noticeable improvement after the reflash.
Can I flush my Tacoma transmission?+
Most Tacoma specialists recommend drain-and-fill twice over 1000 miles rather than a power flush. Flushing high-mileage trans units can dislodge debris and cause new shift problems.
What is the difference between A750F and AC60E?+
A750F is the older 5-speed Aisin (2005-2015), AC60E is the 6-speed (2016+). They share design DNA but have different failure modes and require different fluid changes intervals.
Find a Shop Near You
Find transmission specialists near you who know the AC60E / A750F / AB60F / 6-speed.