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P0731

Wrong Gear Ratio — 1st Gear

High — fix right awayDo not drive

Severity: Fix right away. Driving risks expensive damage or a breakdown.

What P0731 means

The transmission is slipping or not engaging 1st gear correctly — the input and output speeds do not match the expected 1st gear ratio.

Common causes

How to fix it

Check the fluid level and condition. Internal repair is usually needed.

Can I drive with P0731?

The car may struggle to move from a stop. Get it to a transmission shop.

Related codes

Questions, answered

Is it safe to drive with code P0731?

Avoid driving until it is checked — towing is the safer choice. The car may struggle to move from a stop. Get it to a transmission shop.

What causes code P0731?

The most common causes are: Worn 1st gear clutch pack; Low transmission fluid; Failing shift solenoid; Internal wear. A scan tool and a visual check of the parts above is where a technician starts.

How do I fix code P0731?

Check the fluid level and condition. Internal repair is usually needed.

Not repair advice. This page gives general information about code P0731 only. Cars differ by make, model and year — confirm the fault with a scan tool and have the repair done by a qualified technician.

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