LEMON Manuals
: Even more car manuals for everyone
Home
>>
Chevrolet
>>
2006
>>
HHR LS, Automatic
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - 2.2L - DTC P0030 To P0135
>>
DTC P0121
>>
Conditions for Setting the DTC
Conditions for Setting the DTC
The ECM detects that the calculated airflow rate is more than expected.