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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 356 (Engine Controls And Fuel - 3.6L (LGX) - DTC P0446 To DTC P3436 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P16A7, P16AF, or P16B3: Engine Controls Ignition Relay Feedback >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

P16A7 

The ECM detects that the voltage level difference is greater than 3 V between the engine controls ignition relay feedback circuit 2 and the ignition 1 signal circuit for greater than 1 s.

P16AF 

The ECM detects the engine controls ignition relay feedback circuit 2 is less than 5 V.

P16B3 

The ECM detects the engine controls ignition relay feedback circuit 2 is greater than 4 V for greater than 5 s.

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