Evaporative Emission System Leak Detection Pump Control Circuit Low
The P2401 code means the vehicle's onboard diagnostic system has detected: Evaporative Emission System Leak Detection Pump Control Circuit Low. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $400 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Failed emissions inspection
- No noticeable driving symptoms
- EVAP monitors incomplete
- Possible faint fuel odor
Probable Causes (Ranked by Likelihood)
- Short to ground in leak detection pump wiring Very High
- Failed leak detection pump motor (shorted) High
- Corroded pump connector causing low resistance Moderate
- ECM driver circuit shorted to ground Low
Common Fixes by Vehicle
What techs usually find when diagnosing P2401 on specific vehicles — tap your vehicle for the fix and the exact part:
2007-2017 Chrysler/Dodge/Jeep & VW moderate DIY
EVAP leak detection pump control circuit low — the LDP (natural vacuum/pressure pump on the canister) or its wiring has failed. Inspect the connector and harness near the pump first. The pump assembly is a bolt-in replacement. After repair, the EVAP monitor needs a drive cycle to set ready.
Labor: 1-2 hoursFrequently Asked Questions
Can I drive with code P2401?
Yes, safe to drive normally. This is an emissions-related code with no impact on engine performance or vehicle safety.
What causes P2401?
Typically a shorted leak detection pump or wiring that has been damaged by road debris near the fuel tank area.
Is P2401 expensive to fix?
Usually $100 to $400. Pump replacement is the most common fix. Wiring repairs near the fuel tank are less expensive if accessible.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Measure voltage at the leak detection pump connector
-
Check pump motor resistance (should not read near zero)
-
Inspect wiring for chafing or exposed conductors near the fuel tank
-
Check connector for corrosion or water damage
-
Verify ECM output signal with a test light
Sources 2
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)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2010-2018 Dodge Charger
- 2011-2019 Chrysler 300
- 2012-2020 Jeep Cherokee
- 2013-2021 Dodge Durango
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