P2400

EVAP System Leak Detection Pump Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Increased fuel consumption
Difficulty starting the engine
Unstable engine idling
Failure to pass toxicity test

Causes

Open or short circuit in the pump control circuit
Leak detection pump malfunction
Poor contact in the pump connector
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the pump control circuit
Inspect the connectors and contacts of the pump
Check the resistance of the leak detection pump
Replace the pump if necessary
Check the operation of the system after repair

Related codes

P2401 P2402 P2403