P077F — Reverse 2 Incorrect Ratio

What Does P077F Mean?

P077F is a diagnostic trouble code indicating: Reverse 2 Incorrect Ratio. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P077F

⚠️ Check Engine Light (MIL) illuminated
⚠️ Reverse 2 Incorrect Ratio not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Harsh or delayed shifting

Common Causes

🔍 Faulty Reverse 2 Incorrect Ratio
🔍 Wiring or connector issue in Reverse 2 Incorrect Ratio circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P077F mean?

P077F indicates: Reverse 2 Incorrect Ratio. The vehicle's computer has detected that the Reverse 2 Incorrect Ratio is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P077F?

Only short distances if absolutely necessary. P077F affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P077F?

Repair costs for P077F typically range from $150 to $500, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Reverse 2 Incorrect Ratio and related wiring
🔧 Replace faulty Reverse 2 Incorrect Ratio

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P077F: Reverse 2 Incorrect Ratio