P0731

Gear 1 Incorrect Ratio

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Incorrect gear shifting
Delays when switching to first gear
Power dips during acceleration
Increased fuel consumption
Check Engine Light Flashing

Causes

Low or contaminated transmission fluid
Worn or damaged friction discs
Shift solenoids malfunction
Problems with the hydraulic control unit
Mechanical damage in the gearbox

How to Fix

Check the level and condition of the transmission fluid
Scan the transmission for additional trouble codes
Check operation of shift solenoids
Perform hydraulic pressure diagnostics
If necessary, replace worn transmission components

Related codes

P0732 P0733 P0734