P0016

DTC P0016

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0016
- Crankshaft Position (CKP) Camshaft Position (CMP) Correlation

Circuit/System Description

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 parked 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.

Conditions for Running the DTC

* DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set.
* The engine is running.
* The engine speed is less than 1,200 RPM.
* The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

The cam signal falling edge is more than minus 11 degrees or more than plus 14 degrees from the corresponding crank signal falling edge. This condition is equal to the camshaft gear being either advanced or retarded by 1 tooth.

Action Taken When the DTC Sets

DTC P0016 is a Type B DTC.

Conditions for Clearing the DTC

DTC P0016 is a Type B DTC.

Circuit/System Verification

1. Start the engine.
2. Allow the engine to reach normal operating temperature.
3. Allow the engine to idle.
4. 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.

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

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

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

^ If recent repairs were made, refer to Timing Chain and Sprockets Installation, and inspect the timing chain, timing chain tensioner, and both sprockets for proper timing alignment or indexing.

2. Remove the engine front cover, and inspect the timing chain, timing chain tensioner, and sprockets for wear or damage.

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

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Timing Chain and Sprockets Installation