StopOrDrive

Enter a 5-character code such as P0420, P0301, or P0457.

We don't have that code yet

Codes starting with P are engine and transmission, B are body, C are chassis, and U are network communication. A 0 as the second character means a generic code shared by all makes; a 1 means a manufacturer-specific code, so its meaning depends on your brand.

A steady check engine light usually means get it checked soon. A flashing check engine light means an active misfire: reduce speed and stop driving as soon as it is safe.

That doesn't look like an OBD-II code

A valid code is one letter (P, B, C, or U) followed by four characters, for example P0420.

P0730 Incorrect gear ratio

Can I drive with P0730?

Drive soon

OK to drive for now, but get it fixed within days to a couple of weeks, or the damage and the bill can grow.

The transmission is slipping or not engaging the gear it should. Driving on it can turn a small repair into a full rebuild.

What does P0730 mean?

Engine speed and output speed don't match any gear, which means the transmission is slipping.

What causes P0730?

  1. Low or degraded transmission fluid
  2. Faulty shift solenoids
  3. Clogged transmission filter
  4. Worn clutches or internal damage
  5. Valve body problem

How much does it cost to fix P0730?

$150 – $4,500

Fluid service: $150–$300. Solenoid: $250–$600. Rebuild or replacement: $2,500–$4,500 or more.

Confirm the code yourself

A low-cost scanner lets you read the code, clear it, and see if it comes back before paying for a diagnosis.

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