P2528 — Vacuum Reservoir Pressure Sensor Circuit High

What Does P2528 Mean?

P2528 is a diagnostic trouble code indicating: Vacuum Reservoir Pressure Sensor Circuit High. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2528

⚠️ Check Engine Light (MIL) illuminated
⚠️ Vacuum Reservoir Pressure Sensor reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in Vacuum Reservoir Pressure Sensor wiring harness
🔍 Corroded or water-damaged Vacuum Reservoir Pressure Sensor connector
🔍 Faulty Vacuum Reservoir Pressure Sensor outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P2528 mean?

P2528 indicates: Vacuum Reservoir Pressure Sensor Circuit High. The vehicle's computer has detected that the Vacuum Reservoir Pressure Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2528?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2528 for extended periods may cause additional problems.

How much does it cost to fix P2528?

Repair costs for P2528 typically range from $20 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 Vacuum Reservoir Pressure Sensor wiring for short to voltage
🔧 Clean or replace corroded Vacuum Reservoir Pressure Sensor connector
🔧 Replace faulty Vacuum Reservoir Pressure Sensor

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.

P2528: Vacuum Reservoir Pressure Sensor Circuit High