P1506 — Idle Speed Control Valve Open Solenoid Control Circuit Signal High

What Does P1506 Mean?

P1506 is a manufacturer-specific diagnostic trouble code: Idle Speed Control Valve Open Solenoid Control Circuit Signal High. This code applies to BMW, VOLKSWAGEN, KIA, FORD, LINCOLN 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 P1506

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Idle Speed Control Valve Open Solenoid readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in Idle Speed Control Valve Open Solenoid circuit (damaged, chafed, or corroded)
🔍 Faulty Idle Speed Control Valve Open Solenoid connector or terminal
🔍 Failed Idle Speed Control Valve Open Solenoid
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1506 mean?

P1506 indicates: Idle Speed Control Valve Open Solenoid Control Circuit Signal High. The vehicle's computer has detected that the Idle Speed Control Valve Open Solenoid is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1506?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1506 for extended periods may cause additional problems.

How much does it cost to fix P1506?

Repair costs for P1506 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 and repair Idle Speed Control Valve Open Solenoid wiring and connectors
🔧 Replace faulty Idle Speed Control Valve Open Solenoid

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.

P1506: Idle Speed Control Valve Open Solenoid Control Circuit Signal High