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Home >> Mazda >> 1998 >> 626 DX, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Anti-Lock Brake System - Traction Control (2.5L)) >> Diagnostic Trouble Code (DTC) Testing >> DTC U2021: Engine Control System

DTC U2021: Engine Control System

WARNING: This page is about a different variant/trim than selected.

Perform engine on-board diagnostic inspection. See TESTS W/CODES article in ENGINE PERFORMANCE section. Repair as necessary.

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