P1739: Tiptronic Switch Up Circuit Short To Ground

VOLKSWAGEN ACURA HONDA INFINITI OTHER MAZDA

Severity

Medium

System

Manufacturer-Specific Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P1739 Mean?

P1739 is a manufacturer-specific diagnostic trouble code: Tiptronic Switch Up Circuit Short To Ground. This code applies to VOLKSWAGEN, ACURA, HONDA, INFINITI, OTHER 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 P1739

⚠️ Check Engine Light (MIL) illuminated
⚠️ Tiptronic Switch Up not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Tiptronic Switch Up
🔍 Wiring or connector issue in Tiptronic Switch Up circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1739 mean?

P1739 indicates: Tiptronic Switch Up Circuit Short To Ground. The vehicle's computer has detected that the Tiptronic Switch Up is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1739?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1739 for extended periods may cause additional problems.

How much does it cost to fix P1739?

Repair costs for P1739 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 Tiptronic Switch Up and related wiring
🔧 Replace faulty Tiptronic Switch Up

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.