What does code P0700 mean on a Subaru and is it safe to drive?
P0700: Transmission Control System Malfunction. Here's what it means on your Subaru, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
Generic code indicating the TCM has detected a problem. Specific transmission codes (P07xx) will usually be present.
Common causes for your Subaru
- Various transmission electrical or hydraulic faults
- Low or dirty fluid
- Solenoid or sensor failure
Symptoms
- Check Engine Light
- Transmission slipping, harsh shifts
- Limp mode possible
Typical fixes
- Read transmission-specific codes
- Service or replace transmission fluid
- Replace solenoids/sensors as diagnosed
Repair cost range
For a Subaru, repairs for P0700 often fall between $100 and $3000, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Subaru
Subaru's Lineartronic CVT requires Subaru-spec Lineartronic CVTF fluid; off-spec fluid causes P0700 and associated codes including P0740 and P0868. Fluid condition and level should be the first thing inspected.
Most commonly affected models
Outback 2010–2019Forester 2014–2018Legacy 2010–2019