P077F

Symptoms

• Problems with shifting into reverse gear
• Jerking or slipping when reversing
• Transmission transition to emergency mode
• Increased engine speed when reversing
• Check Engine light comes on

Causes

• Low or contaminated transmission fluid
• Worn clutches or other internal gearbox components
• Problems with shift solenoids
• Malfunction of shaft speed sensors
• Mechanical damage in the gearbox

How to Fix

1. Check the level and condition of the transmission fluid
2. Read fault codes using a scanner
3. Check the operation of the gearshift solenoids
4. Diagnose the mechanical condition of the gearbox
5. If necessary, replace worn components

Related codes

Error P077F by Vehicle Brand