Diagnosing DTCs P0016 and P0018

DTCs P0016 (Crankshaft Position – Intake Camshaft Position Not Plausible Bank 1) and P0018 (Crankshaft Position – Intake Camshaft Position Not Plausible Bank 2) may be set and the Check Engine MIL may be illuminated on some 2016-2019 ATS, CTS; 2016-2020 CT6, Camaro; 2017-2019 LaCrosse; 2017-2020 XT5, Colorado, Acadia, Canyon; 2018-2020 Regal; 2019-2020 Blazer; and 2020 CT5 and XT6 models equipped with the 3.0L V6 engine (RPO LGY, LGW) or 3.6L V6 engine (RPO LGX, LGZ). No other drivability concerns will be present.

The DTCs may be caused by the Intake Camshaft Position Actuator Park Lock Solenoid Valves (or Camshaft Position Actuator Locating Pin Control Valves) sticking in the actuator or coming apart and leaving a portion of the valve stuck in the actuator. Remove the Intake Camshaft Position Actuator Park Lock Solenoid Valves (Fig. 24) and inspect them for any damage or sticking conditions. Replace both solenoid valves if there are any performance issues or damage found. Refer to Camshaft Actuator Locating Pin Control Valve Replacement in the appropriate Service Information.

 

Fig. 24

 

The Service Information is being updated to include checking these solenoid valves for DTCs P0016 and P0018.

– Thanks to Aron Wilson

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