P0700 Code: Meaning, Causes, Symptoms & Fix Cost | AXLY.pro

Check Engine Code

P0700

Transmission Control System Malfunction

Severity: high DIY difficulty: 3/5 Typical cost: $100–$4000

What P0700 means

P0700 is an umbrella code — the TCM is flagging the ECM that it has a fault of its own. You need a scanner that can read transmission codes (many generic scanners won't) to see the specific sub-code.

Vehicle-specific P0700 guides

P0700 can mean different things on different vehicles. Pick your make for engine-family specifics:

P0700 on Hyundai →

Symptoms

  • Check engine light
  • Harsh, slipping, or delayed shifts
  • Transmission stuck in one gear (limp mode)
  • No reverse or no forward gears in severe cases

Likely causes (most common first)

  1. Low or burnt transmission fluid
  2. Failed shift solenoid
  3. Worn transmission internals
  4. Speed sensor fault
  5. Wiring or connector issue
  6. Failed TCM

Can I keep driving?

Drivable in limp mode but hard on the transmission. Scan for the specific sub-code and address it — putting off transmission work only raises the cost.

Typical repair cost

DIY fixes can start near $100 (parts only). Shop repairs for P0700 typically run up to $4000 depending on the underlying cause and vehicle. Start with the most common cause — Low or burnt transmission fluid — before throwing parts at it.

Symptoms that match P0700

If you got here from a search query, one of these might describe what your car is actually doing:

Recommended parts & tools for P0700

Our buyer’s guides cover the tools and parts that pair with AXLY:

Browse all car gear →

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Related codes

P0701P0702P0720P0741

Confirm P0700 yourself in 60 seconds

Two cheap things and you can read P0700 yourself — plus every other stored code and live engine data, free. No subscription.

1. Download AXLY Free 2. Veepeak OBDCheck BLE+ — ~$30