Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic
The P2407 code means the vehicle's onboard diagnostic system has detected: Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50 - $350 (parts and labor)
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Common Symptoms
- Check Engine Light comes and goes
- Intermittent emissions code stored
- No drivability symptoms
- EVAP system monitor inconsistent results
- Code may clear itself then return
Probable Causes (Ranked by Likelihood)
- Loose or intermittent connection at pump connector Very High
- Degraded wiring with intermittent contact High
- Pump sensor failing intermittently Moderate
- Water intrusion in connector causing intermittent signal Moderate
Frequently Asked Questions
Can I drive with code P2407?
Yes, safe to drive. The intermittent nature of this code often makes it appear and disappear on its own.
What causes P2407?
Usually a loose connector or corroded wiring that makes intermittent contact. Cleaning and reseating the connector with dielectric grease often resolves it.
Is P2407 expensive to fix?
Often $50 to $350. Connector cleaning and reseating is inexpensive. If the pump sensor is failing, pump replacement is needed.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Wiggle test the pump connector and wiring while monitoring live data
-
Inspect connector pins for looseness or corrosion
-
Check wiring for intermittent breaks by flexing the harness
-
Clean and apply dielectric grease to the pump connector
-
Monitor pump sense circuit over multiple drive cycles
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Commonly Affected Vehicles
- 2011-2019 Jeep Wrangler
- 2012-2020 Ram 1500
- 2013-2021 Dodge Challenger
- 2014-2022 Jeep Cherokee
Related Codes
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