P1677 — Traction Control System FI Data Line Failure

What Does P1677 Mean?

P1677 is a manufacturer-specific diagnostic trouble code: Traction Control System FI Data Line Failure. This code applies to ACURA, HONDA, INFINITI, VOLKSWAGEN, BUICK vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1677

⚠️ Check Engine Light (MIL) illuminated
⚠️ Traction Control System FI Data Line Failure not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Traction Control System FI Data Line Failure
🔍 Wiring or connector issue in Traction Control System FI Data Line Failure circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1677 mean?

P1677 indicates: Traction Control System FI Data Line Failure. The vehicle's computer has detected that the Traction Control System FI Data Line Failure is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1677?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1677 for extended periods may cause additional problems.

How much does it cost to fix P1677?

Repair costs for P1677 typically range from $80 to $300, 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 Traction Control System FI Data Line Failure and related wiring
🔧 Replace faulty Traction Control System FI Data Line Failure

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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.

P1677: Traction Control System FI Data Line Failure