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Home >> Mazda >> 2000 >> MPV ES >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls [Self-Diagnostics 2.3L]) >> Diagnostic Tests >> DTC P0402: EGR Flow Excessive Detected >> Detection Condition

Detection Condition

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

PCM monitors difference in intake manifold pressures when EGR is operated and when it is stopped. If difference is too large, PCM determines that EGR flow excessive. This is an intermittent monitor (EGR). MIL illuminates if PCM detects malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for same malfunction has been stored in PCM. PENDING CODE is available if PCM detects malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.

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