OBD II Fault Code P16A9 :

Description of Fault code P16A9

NO.3 CYLINDER INJECTOR QUANTITY ADJUSTMENT (IQA) DATA ERROR

Possible failuer P16A9

• IQA correction value for No.3 injector within EEPROM

Diagnostic Procedure using AutoHex II Scan Tool

• When the Engine Control Module (ECM) is initialized, the checksum of the IQA correction value written in the EEPROM is checked.

Test Conditions using AutoHex tester

• IG ON (II) (When the Engine Control Module (ECM) initializing)

Clear Fault codes Conditions

• When the Engine Control Module (ECM) is initialized, the checksum of the IQA correction value written in the EEPROM is checked.

MIL Status

• Check Engine Light ON

Note:

• AutoHex II is a professional Auto diagnostic.
• This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
  To get the accurate fault code description you may use AutoHex II

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