P1555 — Charge Pressure Upper Limit Exceeded

What Does P1555 Mean?

P1555 is a manufacturer-specific diagnostic trouble code: Charge Pressure Upper Limit Exceeded. This code applies to VOLKSWAGEN, BUICK, CADILLAC, CHEVY, CHRYSLER 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 P1555

⚠️ Check Engine Light (MIL) illuminated
⚠️ Charge Pressure Upper Limit Exceeded not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Charge Pressure Upper Limit Exceeded
🔍 Wiring or connector issue in Charge Pressure Upper Limit Exceeded circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1555 mean?

P1555 indicates: Charge Pressure Upper Limit Exceeded. The vehicle's computer has detected that the Charge Pressure Upper Limit Exceeded is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1555?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1555 for extended periods may cause additional problems.

How much does it cost to fix P1555?

Repair costs for P1555 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 Charge Pressure Upper Limit Exceeded and related wiring
🔧 Replace faulty Charge Pressure Upper Limit Exceeded

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.

P1555: Charge Pressure Upper Limit Exceeded