Operation CHARM
: Car repair manuals for everyone.
Home
>>
Mazda
>>
2000
>>
MX-5 Miata LS L4-1.8L DOHC
>>
Repair and Diagnosis
>>
A L L Diagnostic Trouble Codes ( DTC )
>>
Testing and Inspection
>>
P Code Charts
>>
P0421
P0421
Steps 1 - 6:
Steps 7 - 8:
