P05AF — Active Grille Air Shutter B Stuck On

What Does P05AF Mean?

P05AF is a diagnostic trouble code indicating: Active Grille Air Shutter B Stuck On. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P05AF

⚠️ Check Engine Light (MIL) illuminated
⚠️ Active Grille Air Shutter B remains active when it should be off
⚠️ Related system running continuously
⚠️ Erratic idle speed

Common Causes

🔍 Active Grille Air Shutter B mechanically stuck in active position
🔍 Short circuit holding Active Grille Air Shutter B control on
🔍 Faulty Active Grille Air Shutter B driver circuit in ECM/PCM

Frequently Asked Questions

What does P05AF mean?

P05AF indicates: Active Grille Air Shutter B Stuck On. The vehicle's computer has detected that the Active Grille Air Shutter B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P05AF?

Only short distances if absolutely necessary. P05AF affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P05AF?

Repair costs for P05AF 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

🔧 Inspect Active Grille Air Shutter B for mechanical binding or debris
🔧 Replace stuck Active Grille Air Shutter B
🔧 Check Active Grille Air Shutter B control circuit for short

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.

P05AF: Active Grille Air Shutter B Stuck On