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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0685, P0686, P0687, P0689, P0690 Or P1682: Engine Controls Ignition Relay Control Circuit >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

P0685, P0686, P0687 

Control Circuit=Commanded state does not match the actual state - Greater than 2 s

P0689 

Engine Controls Ignition Relay Feedback Signal=Commanded state does not match the actual state - Greater than 5 s

P0690 

Engine Controls Ignition Relay Feedback Signal=Commanded state does not match the actual state - Greater than 5 s

P1682 

The following parameters are not within 3 V of each other:

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