OBD II Fault Code P16A3 :

Description of Fault code P16A3

ENGINE CONTROL MODULE (ECM) INTERNAL CIRCUIT MALFUNCTION

Possible failuer P16A3

• Engine Control Module (ECM) internal ROM, RAM, A/D converter function

Diagnostic Procedure using AutoHex II Scan Tool

• The CPU reset cause is monitored if it is the normal power-on reset. (When the ROM or the RAM are abnormal or the A/D converter is abnormal, the CPU reset done automatically is detected. And when the Engine Control Module (ECM) internal is abnormal, the DTCs are also stored.)

Test Conditions using AutoHex tester

• Continuously

Clear Fault codes Conditions

• The CPU reset cause is monitored if it is the normal power-on reset. (When the ROM or the RAM are abnormal or the A/D converter is abnormal, the CPU reset done automatically is detected. And when the Engine Control Module (ECM) internal is abnormal, the DTCs are also stored.)

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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