P2405: EVAP System Leak Detection Pump Sense Circuit Low

Severity

Medium

System

Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P2405 Mean?

P2405 is a diagnostic trouble code indicating: EVAP System Leak Detection Pump Sense Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2405

⚠️ Check Engine Light (MIL) illuminated
⚠️ EVAP System Leak Detection Pump Sense reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in EVAP System Leak Detection Pump Sense circuit
🔍 Poor ground connection at EVAP System Leak Detection Pump Sense
🔍 Faulty EVAP System Leak Detection Pump Sense with no output signal
🔍 Disconnected or loose EVAP System Leak Detection Pump Sense connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P2405 mean?

P2405 indicates: EVAP System Leak Detection Pump Sense Circuit Low. The vehicle's computer has detected that the EVAP System Leak Detection Pump Sense is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2405?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2405 for extended periods may cause additional problems.

How much does it cost to fix P2405?

Repair costs for P2405 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

🔧 Repair broken wire or restore ground in EVAP System Leak Detection Pump Sense circuit
🔧 Clean and secure EVAP System Leak Detection Pump Sense connector and ground points
🔧 Replace failed EVAP System Leak Detection Pump Sense

1
Find your vehicle above
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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.