P0401 / P0402 on Ford Maverick | DVI Reports

HELLA describes rough running and an illuminated engine light with these EGR codes.

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P0401 / P0402 on Ford Maverick

2001–2002 Ford Maverick, 2.0 YF / 3.0 AJ.

Documented vehicle case Editorial review: 17 October 2026

HELLA describes rough running and an illuminated engine light with these EGR codes.

What to check

Check pneumatic EGR operation first. If correct, inspect the differential pressure sensor and its hoses for damage and correct connections.

Incorrect measurement is a possibility, not a diagnosis. Confirm the fault before replacement.

EGR gas recirculation

Simplified operating schematic. It does not show exact component locations or installation procedures for a specific engine.

Case source HELLA Tech World — Ford Maverick Search codes in the catalogue

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