P02A8 — Cylinder 4 - Injector Restricted

What Does P02A8 Mean?

P02A8 is a diagnostic trouble code indicating: Cylinder 4 - Injector Restricted. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P02A8

⚠️ Check Engine Light (MIL) illuminated
⚠️ Cylinder 4 - Injector Restricted not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Engine hesitation or stumble

Common Causes

🔍 Faulty Cylinder 4 - Injector Restricted
🔍 Wiring or connector issue in Cylinder 4 - Injector Restricted circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P02A8 mean?

P02A8 indicates: Cylinder 4 - Injector Restricted. The vehicle's computer has detected that the Cylinder 4 - Injector Restricted is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P02A8?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P02A8 for extended periods may cause additional problems.

How much does it cost to fix P02A8?

Repair costs for P02A8 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 Cylinder 4 - Injector Restricted and related wiring
🔧 Replace faulty Cylinder 4 - Injector Restricted

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.

P02A8: Cylinder 4 - Injector Restricted