P24C1 — EVAP System Leak Detection Pump Switching Valve Performance/Stuck Off

What Does P24C1 Mean?

P24C1 is a diagnostic trouble code indicating: EVAP System Leak Detection Pump Switching Valve Performance/Stuck Off. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P24C1

⚠️ Check Engine Light (MIL) illuminated
⚠️ EVAP System Leak Detection Pump Switching Valve not meeting expected output
⚠️ Degraded performance of related system
⚠️ Reduced engine performance

Common Causes

🔍 EVAP System Leak Detection Pump Switching Valve degraded from age or contamination
🔍 Mechanical wear in EVAP System Leak Detection Pump Switching Valve or related parts
🔍 Restriction or blockage affecting EVAP System Leak Detection Pump Switching Valve
🔍 Calibration drift in EVAP System Leak Detection Pump Switching Valve

Frequently Asked Questions

What does P24C1 mean?

P24C1 indicates: EVAP System Leak Detection Pump Switching Valve Performance/Stuck Off. The vehicle's computer has detected that the EVAP System Leak Detection Pump Switching Valve is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P24C1?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P24C1 for extended periods may cause additional problems.

How much does it cost to fix P24C1?

Repair costs for P24C1 typically range from $50 to $400, 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 EVAP System Leak Detection Pump Switching Valve for contamination or wear
🔧 Replace EVAP System Leak Detection Pump Switching Valve
🔧 Address any related mechanical faults

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.

P24C1: EVAP System Leak Detection Pump Switching Valve Performance/Stuck Off