P077F
Reverse 2 Incorrect Ratio
P077F is an OBD-II diagnostic trouble code meaning: Reverse 2 Incorrect Ratio. Common causes: low or contaminated transmission fluid, worn clutches or other internal gearbox components. Estimated repair cost: $56–556.
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
- Check the level and condition of the transmission fluid
- Read fault codes using a scanner
- Check the operation of the gearshift solenoids
- Diagnose the mechanical condition of the gearbox
- If necessary, replace worn components
Related codes
Error P077F by Vehicle Brand
FAQ
What does the P077F code mean?
P077F is an OBD-II diagnostic trouble code that indicates: Reverse 2 Incorrect Ratio
What causes a P077F error code?
The most common causes of P077F include: Low or contaminated transmission fluid; Worn clutches or other internal gearbox components; Problems with shift solenoids; Malfunction of shaft speed sensors.
How do I fix a P077F diagnostic trouble code?
To fix P077F: Check the level and condition of the transmission fluid. Read fault codes using a scanner. Check the operation of the gearshift solenoids. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P077F?
Limited driving only, diagnose soon
How much does it cost to fix P077F?
The estimated repair cost for P077F is $56–556. Actual cost depends on your vehicle, location, and labor rates.
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