P1766 — Throttle Angle Signal Stuck Off

What Does P1766 Mean?

P1766 is a manufacturer-specific diagnostic trouble code: Throttle Angle Signal Stuck Off. This code applies to VOLKSWAGEN, FORD, LINCOLN, MERCURY 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 P1766

⚠️ Check Engine Light (MIL) illuminated
⚠️ Throttle Angle not activating when commanded
⚠️ Related system not available
⚠️ Reduced engine performance

Common Causes

🔍 Throttle Angle mechanically stuck or seized
🔍 No power reaching Throttle Angle actuator
🔍 Open circuit in Throttle Angle control wiring

Frequently Asked Questions

What does P1766 mean?

P1766 indicates: Throttle Angle Signal Stuck Off. The vehicle's computer has detected that the Throttle Angle is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1766?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1766 for extended periods may cause additional problems.

How much does it cost to fix P1766?

Repair costs for P1766 typically range from $50 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

🔧 Check power supply to Throttle Angle
🔧 Replace seized or failed Throttle Angle
🔧 Repair open circuit in Throttle Angle control wiring

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.

P1766: Throttle Angle Signal Stuck Off