OBD Guide

P0730

Incorrect Gear Ratio

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • Erratic gear shifting
  • Switching delays
  • Gear slip
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Low transmission fluid level
  • Friction disc wear
  • Shift solenoids malfunction
  • Problems with the hydraulic block
  • Malfunction of speed sensors

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Carry out diagnostics of switching solenoids
  3. Check the condition of friction discs and other mechanical components
  4. Diagnose speed sensors and their wiring
  5. Replace damaged components if necessary

Related codes

Error P0730 by Vehicle Brand