Rough Running Idle, ABS Light Illuminated, and Check Engine Light on Mazda B4000

Problem overview

Water intrusion into a connector (X309) located under the cab, beneath the driver's seat, can cause a rough idle, erratic speedometer operation, ABS light and check engine light illumination, and automatic transmission shifting problems. If needed, connector repair parts are available from Mazda dealers, and possibly some Ford dealers.

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Rough Running Idle, ABS Light Illuminated, and Check Engine Light on Mazda B4000

Problem overview

Mazda B4000 vehicles with this problem

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