P240B — EVAP System Leak Detection Pump Heater Control Circuit Low

What Does P240B Mean?

P240B is a diagnostic trouble code indicating: EVAP System Leak Detection Pump Heater Control 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 P240B

⚠️ Check Engine Light (MIL) illuminated
⚠️ EVAP System Leak Detection Pump Heater 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 Heater circuit
🔍 Poor ground connection at EVAP System Leak Detection Pump Heater
🔍 Faulty EVAP System Leak Detection Pump Heater with no output signal
🔍 Disconnected or loose EVAP System Leak Detection Pump Heater connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P240B mean?

P240B indicates: EVAP System Leak Detection Pump Heater Control Circuit Low. The vehicle's computer has detected that the EVAP System Leak Detection Pump Heater is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P240B?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P240B for extended periods may cause additional problems.

How much does it cost to fix P240B?

Repair costs for P240B 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 Heater circuit
🔧 Clean and secure EVAP System Leak Detection Pump Heater connector and ground points
🔧 Replace failed EVAP System Leak Detection Pump Heater

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.

P240B: EVAP System Leak Detection Pump Heater Control Circuit Low