Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3)DTC P2402NOTES

2006 Mazda 6 i, 4D Sedan, Automatic

DTC P2402: Notes

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Notes

DTC P2402 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2402

EVAP system leak detection pump motor circuit high

DETECTION CONDITION

The PCM monitors pump load current (EVAP line pressure), while EVAP leak monitor is operating. If the pump load current is higher than specified, the PCM determines EVAP system leak detection pump motor circuit has a malfunction.

Diagnostic support note

This is a intermittent monitor (CCM).
MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA is available.
DTC is stored in PCM memory.

POSSIBLE CAUSE

EVAP system leak detection pump malfunction
Short to power supply between the EVAP system leak detection pump terminal D and PCM terminal 1U
PCM malfunction

Courtesy of MAZDA MOTORS CORP.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.