Trouble codes › P0700

P0700 Transmission Control System (MIL Request)

Transmission

P0700 means the transmission computer has stored its own fault code; read the transmission codes to find the real problem.

This is a flag, not a diagnosis: the transmission's own computer has stored a fault and asked the engine computer to turn on the check-engine light. The real problem is a separate transmission code that many basic code readers can't see.

Can I keep driving? Yes, but get it fixed soon.

Depends on the real fault. If it's shifting harshly, stuck in one gear (limp mode) or slipping, drive as little as possible and get it scanned. A transmission driven while slipping can be damaged quickly.

Common causes

  1. Any transmission fault: a shift solenoid, speed sensor, pressure control, wiring or internal problem
  2. Low or burnt transmission fluid
  3. Low battery voltage or a poor ground (can set communication and solenoid faults)

Symptoms

  • Check-engine light
  • Harsh, late or erratic shifts
  • Stuck in one gear (limp mode)
  • Slipping or flare between gears

Common on: Chevrolet Silverado 1500, Nissan Altima, Nissan Rogue, Chevrolet Malibu, Ford Fusion, Dodge Grand Caravan, Chevrolet Traverse, GMC Acadia, Nissan Sentra

What to check first

  1. Have the transmission computer scanned with a tool that reads transmission codes; most auto parts stores' free scans only read engine codes, so ask, or use a better scan tool.
  2. Check the transmission fluid level and condition the way your owner's manual describes (some transmissions have no dipstick).
  3. Check the battery and grounds if several unrelated codes are set.
  4. Then diagnose the specific transmission code it shows (for example P0715 input speed sensor or P0740 torque converter clutch).

What does P0700 mean on your vehicle?

The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.

Ask iRepair about P0700

No scanner? Most auto parts stores read check-engine codes for free.

Related codes

General guidance for P0700 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.