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TransmissionSeverity Medium: diagnose soon

P0700Transmission Control System (MIL Request)

What it means

The transmission control module has stored its own fault code and asked the engine ECU to switch on the check engine light. The real code is in the transmission module.

Symptoms

  • Harsh, late or missing shifts
  • Transmission in limp mode (stuck in one gear)
  • Gearbox or check engine warning light

Common causes

  • Any transmission fault stored in the gearbox control module

What to check first

  1. Read the codes from the transmission control module
  2. Check fluid level and condition
  3. Check the gearbox connectors and supplies
Can I drive with P0700? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0700: questions and answers

What does P0700 mean?

P0700: Transmission Control System (MIL Request). The transmission control module has stored its own fault code and asked the engine ECU to switch on the check engine light. The real code is in the transmission module.

What are the symptoms of P0700?

Harsh, late or missing shifts. Transmission in limp mode (stuck in one gear). Gearbox or check engine warning light.

What causes P0700?

Any transmission fault stored in the gearbox control module.

How do you diagnose P0700?

1. Read the codes from the transmission control module 2. Check fluid level and condition 3. Check the gearbox connectors and supplies

Can I drive with P0700?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.