P1701: Transmission Range Sensor Reverse Engagement Error

MAZDA SUBARU BUICK CADILLAC CHEVY GM GMC OLDSMOBILE

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 P1701 Mean?

P1701 is a manufacturer-specific diagnostic trouble code: Transmission Range Sensor Reverse Engagement Error. This code applies to MAZDA, SUBARU, BUICK, CADILLAC, CHEVY 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 P1701

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Range Sensor Reverse Engagement Error not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Transmission Range Sensor Reverse Engagement Error
🔍 Wiring or connector issue in Transmission Range Sensor Reverse Engagement Error circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1701 mean?

P1701 indicates: Transmission Range Sensor Reverse Engagement Error. The vehicle's computer has detected that the Transmission Range Sensor Reverse Engagement Error is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1701?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1701 for extended periods may cause additional problems.

How much does it cost to fix P1701?

Repair costs for P1701 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 Transmission Range Sensor Reverse Engagement Error and related wiring
🔧 Replace faulty Transmission Range Sensor Reverse Engagement Error

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.