P0731 Hyundai -

Question

the vehicle vibrates once drive is engaged , and becomes normal on acceleration

Answer 1

Hi there,

The code P0731 indicates an issue with the transmission gear ratio. Here is some info for you.

P0731 HYUNDAI - First Gear Incorrect Ratio

Read more: https://www.autocodes.com/p0731_hyundai.html

The code P0661 indicates an issue with the intake manifold tuning valve. Here is some info for you.

P0661 HYUNDAI - Intake Manifold Tuning Valve Control Circuit Low Bank 1

Read more: https://www.autocodes.com/p0661_hyundai.html