P2440 low
EVAP Leak Detection Pump Circuit High
Can I Drive?
Yes, But Fix Soon
DIY Difficulty
moderate
Estimated Cost
$100 - $400 (parts and labor)
What does P2440 mean?
The P2440 code means the vehicle's onboard diagnostic system has detected: EVAP Leak Detection Pump Circuit High. This is a low severity code.
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Common Symptoms
- Check Engine Light on
- EVAP leak test fails
- Gas cap warning light on
- Slight fuel odor
- Failed emissions test
Probable Causes (Ranked by Likelihood)
- Open circuit in LDP circuit Very High
- Corroded LDP connector High
- Damaged LDP wiring Moderate
- ECM LDP driver fault Low
Step-by-Step Diagnostic Procedure
-
Test EVAP leak detection pump operation with scan tool
-
Inspect LDP wiring and connector
-
Check LDP pump for mechanical operation
-
Verify ECM command to LDP
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Frequently Asked Questions
What does P2440 mean?
P2440 indicates: EVAP Leak Detection Pump Circuit High. The ECM detected an issue that needs diagnosis and repair.
Is P2440 urgent?
EVAP codes should be repaired but are not usually urgent unless you have an upcoming emissions test.
What should I check first?
Start with a visual inspection of the sensor wiring and connector. Use a scan tool to read live data. For DPF codes, check soot loading level. For EVAP codes, check the gas cap first.