The engine control module (ECM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor pulses to monitor the correlation between the crankshaft and the camshaft position. The crankshaft reluctor wheel consists of a 60-tooth pattern with 2 teeth missing for the reference gap. Each tooth is evenly spaced 6 degrees apart except for the reference gap. The camshaft reluctor wheel has 4 teeth, 2 narrow and 2 wide. The 4 trailing edges of each tooth are evenly spaced at 90 degrees apart around the circumference of the camshaft sprocket. With the engine running and the CMP actuator in the Park position, the ECM expects the camshaft signal pulses to occur 36 crankshaft degrees before top dead center (BTDC) for cylinder number 1, and every 90 degrees thereafter.

The ECM detects 4 CMP pulses occur more than 11 crank degrees before, or 11 crank degrees after nominal position for 24 out of 30 engine cycles.

DTC P0016 is a Type B DTC.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Electronic Ignition (EI) System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description.
2. Ignition ON, verify the scan tool hood position parameter displays Open.

⇒	If the hood position does not display Open, refer to Diagnostic Trouble Code (DTC) List - Vehicle for DTC P254F.

3. Start the engine.
4. Allow the engine to reach normal operating temperature.
5. Allow the engine to idle.
6. Observe the DTC information with a scan tool.

⇒	If the scan tool indicates DTC P0016 has failed this ignition cycle, continue with the Circuit/System Testing.

7. If the vehicle passes the Circuit/System Verification test, operate the vehicle within the Conditions For Running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records data list.

Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

1. Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description.
2. Ignition ON, verify the scan tool hood position parameter displays Open.

⇒	If the hood position does not display Open, refer to Diagnostic Trouble Code (DTC) List - Vehicle for DTC P254F.

3. Inspect the engine front cover area or review the service history of the vehicle for any recent repairs involving the timing chain, the timing chain tensioner, the camshaft, the crankshaft, the camshaft actuator, or the sprockets.

⇒	If recent repairs were made, refer to Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator and Solenoid Valve Replacement and inspect the timing chain, the timing chain tensioner, and both sprockets for proper timing alignment or indexing.

4. Remove the engine front cover. Refer to Camshaft Position Actuator Replacement and inspect the camshaft position actuator for wear or damage. Refer to Camshaft Position Actuator Cleaning and Inspection.

⇒	If any components are worn or damaged, replace as necessary.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.