Mazda RX-8 Workshop Manual page 570

POSSIBLE
CAUSE
Diagnostic procedure
STEP
VERIFY FREEZE FRAME DATA (MODE 12) AND DIAGNOSTIC
1 MONITORING TEST RESULTS HAVE BEEN RECORDED
Have the FREEZE FRAME DATA (Mode 12) and DIAGNOSTIC
MONITORING TEST RESULTS (EVAP system related) been
recorded?
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
2
Verify related Service Bulletins and/or on-line repair
information availability.
Is any related repair information available?
The DTC is stored in the PCM memory.
DIAGNOSTIC MONITORING TEST RESULT is available.
DTC P0442, P0456
After-market EVAP hardware (such as fuel-filler cap) not conforming to required
specifications.
Small holes or cuts in fuel vapor hoses/tubes (P0442, P0456).
Change over valve stays partially open on closed command.
Damaged, cross-threaded or loosely installed fuel-filler cap.
EVAP system component seals leaking.
Purge solenoid leaking
DTC P0455
After-market EVAP hardware (such as fuel-filler cap) not conforming to required
specifications.
Disconnected or cracked change over valve, purge solenoid valve outlet tube, or
EVAP return tube.
Loose, malfunctioning, damaged or missing fuel-filler cap.
Loose fuel vapor hose/tube connections to EVAP system components.
Change over valve stuck open.
Damaged charcoal canister.
INSPECTION ACTION
YesGo to the next step.
No Record the FREEZE
FRAME DATA (Mode 12)
and DIAGNOSTIC
MONITORING TEST
RESULTS on the repair
order, then go to the
next step.
YesPerform repair or
diagnosis according to
the available repair
information.