P0016

DTC P0016 or P0017

Diagnostic Instructions

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

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

DTC P0017
- Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation

Circuit/System Description

The engine control module (ECM) uses the crankshaft position (CKP) sensor and the intake and exhaust camshaft position (CMP) sensor information to monitor the correlation between the crankshaft, intake, and exhaust camshaft position.

Conditions for Running the DTC

* DTCs P0335, P0336, P0340, P0341, P0365, P0366, P0641, and P0651 are not set.
* The engine is cranking or running.
* The engine speed is less than 1,200 RPM and the CMP actuator is commanded to the home or parked position.
* These DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the CMP sensor pulses occur less than 9 or more than 12 crankshaft degrees outside of the normal position for 24 out of 30 engine cycles.

Action Taken When the DTC Sets

DTCs P0016 and P0017 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0016 and P0017 are Type B DTCs.

Reference Information
Schematic Reference

Engine Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Note: The scan tool control of the CMP actuator is inhibited when DTC P0016 or P0017 sets.

1. Command each CMP actuator to 25 percent. The CMP actuator angle desired parameter should match the CMP actuator actual parameter.
2. 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

Note: Incorrect engine oil viscosity, aftermarket engine oil additives, or engine oil that is overdue for changing, can greatly affect the performance of the camshaft actuator.

1. Ignition OFF, inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications (Specifications).
2. Remove the CMP actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement (Service and Repair).
3. Connect a fused jumper wire between the CMP actuator high control circuit terminal A at the solenoid and B+. Connect a jumper wire to the CMP actuator low reference circuit terminal B at the solenoid. Momentarily touch the jumper wire to ground. Observe the spool valve inside the CMP actuator. The spool valve should move from fully closed to fully opened position.

• If the spool valve inside the CMP actuator solenoid does not move, replace the CMP actuator solenoid.

4. Inspect the CMP actuator for binding or being stuck.
5. Inspect the engine for the following conditions:

* An incorrectly installed camshaft sensor
* An incorrectly installed crankshaft sensor
* An incorrectly installed camshaft actuator
* Incorrect valve timing
* A loose camshaft reluctor wheel
* A loose crankshaft reluctor wheel
* Excessive crankshaft end play

Repair Instructions

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

* Camshaft Position Actuator Solenoid Valve Replacement (Service and Repair)
* Camshaft Position Exhaust Actuator Replacement (Camshaft Position Exhaust Actuator Replacement)
* Camshaft Position Intake Actuator Replacement (Camshaft Position Intake Actuator Replacement)
* Camshaft Position Sensor Replacement - Exhaust (Service and Repair)
* Camshaft Position Sensor Replacement - Intake (Service and Repair)
* Camshaft Timing Chain, Sprocket, and Tensioner Replacement (Service and Repair)
* Crankshaft and Bearing Cleaning and Inspection (Overhaul)
* Crankshaft Balancer Replacement (Service and Repair)
* Crankshaft Position Sensor Replacement (Service and Repair)
* Exhaust Camshaft and Valve Lifter Replacement (Exhaust Camshaft and Valve Lifter Replacement)
* Intake Camshaft and Valve Lifter Replacement (Intake Camshaft and Valve Lifter Replacement)