P0014
DTC P0011 or P0014
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 P0011
- Intake Camshaft Position (CMP) System Performance
DTC P0014
- Exhaust Camshaft Position (CMP) System Performance
Diagnostic Fault Information
Circuit/System Description
The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The CMP actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.
Conditions for Running the DTC
* The engine speed is greater than 520 RPM.
* The engine control module (ECM) has enabled the CMP actuator.
* The calculated engine oil temperature is between -48 and +180°C (-54 and +356°F).
* The engine coolant temperature is between -48 and +143°C (-54 and +289°F).
* The CMP actuator is steady for 2 seconds.
* DTCs P0011 and P0014 run continuously when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the difference between the desired CMP actuator angle and the actual CMP actuator angle is more than 8 degrees for greater than for 20 seconds.
Action Taken When the DTC Sets
DTCs P0011 and P0014 are type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0011 and P0014 are type B DTCs.
Diagnostic Aids
* The engine oil condition has a major impact on the camshaft actuator system.
* A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life parameter. Advise the customer an oil change may be required.
* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing chain can cause this DTC to set.
* A Camshaft Position Actuator Solenoid Valve or an camshaft actuator that is stuck can cause this DTC to set.
Reference Information
Schematic Reference
Engine Controls Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Camshaft Actuator System Description (Camshaft Actuator System Description)
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
Note: The engine oil level and the oil pressure are critical to the correct operation of the camshaft position actuator system. Verify that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic. Refer to Oil Pressure Diagnosis and Testing (Component Tests and General Diagnostics).
1. Ignition ON, observe the scan tool DTC information. Verify that none of the following DTCs are set. DTC P0016, P0017, P0335, P0336, P0338, P0341, P0342, P0343, P0366, P0367, P0368, P0638, P2100, P2101, or P2119.
• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code Descriptions) for further diagnosis.
2. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate Camshaft Position Actuator Solenoid Valve.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.
• If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.
3. Connect a DMM, set on the diode setting, between the control circuit terminal B and ground. The voltage should be greater than 2 V.
• If the DMM displays OL, test the control circuit for a short to voltage or an open/high resistance. If the circuit/connections test normal, replace the Engine Control Module.
• If less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the Engine Control Module.
4. Command the Camshaft Position Actuator Solenoid Valve ON and OFF with a scan tool. The DMM should transition from greater than 2 V when commanded OFF to less than 1 V, when commanded ON.
• If the circuit voltage does not correspond to the specified values, replace the Engine Control Module.
5. Remove the Camshaft Position Actuator Solenoid Valve. Inspect the Camshaft Position Actuator Solenoid Valve and mounting area for the following conditions:
* For a torn, restricted, mis-positioned, or missing screens at the Camshaft Position Actuator Solenoid Valve
* For engine oil leaks between the oil sealing lands of the Camshaft Position Actuator Solenoid Valve. Inspect the lands of the Camshaft Position Actuator Solenoid Valve for nicks
* For oil seepage at the Camshaft Position Actuator Solenoid Valve connector
• If a condition is found, replace Camshaft Position Actuator Solenoid Valve.
6. Ignition OFF, swap the appropriate Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is operating correctly.
7. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states
• If greater than the specified value, replace the mechanical camshaft position actuator.
8. If all circuits/connections test normal, test or replace the Camshaft Position Actuator Solenoid Valve.
Component Testing
1. Ignition OFF, disconnect the harness connector at the appropriate Camshaft Position Actuator Solenoid Valve.
2. Test for 7-12 ohm between the control terminal B and the ignition terminal A of the Camshaft Position Actuator Solenoid Valve.
• If not within the specified range, replace the Camshaft Position Actuator Solenoid Valve.
3. Test for infinite resistance between each terminal and the Camshaft Position Actuator Solenoid Valve housing.
• If not the specified value, replace the Camshaft Position Actuator Solenoid Valve.
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)
* Control Module References (Programming and Relearning) for Engine Control Module replacement, setup, and programming