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Home >> Mazda >> 2003 >> 6 s, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [Self-Diagnostics 3.0L] >> Diagnostic Tests >> DTC P0456: EVAP Control System - Very Small Leak Detected >> Detection Condition
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Detection Condition

PCM measures pump load current (EVAP line pressure) when a certain period has passed after EVAP system is sealed and after ignition is turned off. If load does not reach reference load value or a rate of load increase less than specified within a certain period, PCM determines EVAP system has a very small leak.

Monitoring Condition:

  1. Ignition: OFF
  2. IAT: 41-113°F (5-45°C)
  3. Battery voltage: 11-14.6 volts
  4. Atmospheric pressure: 21.3 in. Hg (72.2 kPa) or more
  5. Fuel tank level: 15-85 percent
This is an intermittent monitor (Evaporative). MIL illuminates if PCM detects 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 malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.

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