Operation CHARM
: Car repair manuals for everyone.
Home
>>
Mazda
>>
2004
>>
6 V6-3.0L DOHC
>>
Repair and Diagnosis
>>
A L L Diagnostic Trouble Codes ( DTC )
>>
Testing and Inspection
>>
U Code Charts
>>
U2021
U2021
DTC U2021
Note:
To warm up the engine completely, idle the engine and wait for
more than 5 minutes.
Steps 1-4:
Diagnostic Procedure