P0017
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, 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 pulse is more than 16.31 degrees out of sequence with the corresponding crank sensor pulse.
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.
Diagnostic Aids
Important: The scan tool control of the CMP actuator solenoid is inhibited when DTC P0016 or P0017 sets.
* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, crankshaft, or timing chain can cause this DTC to set.
* Excessive crankshaft endplay 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)
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
1. Operate the vehicle at idle and at various engine speeds and load ranges while observing the CMP Variance, Desired CMP, and CMP Angle parameters with a scan tool.
2. The CMP Variance should remain less than or equal to 1 degree unless the CMP actuator is being commanded. If the CMP actuator is commanded, the CMP Variance will rise for 1-2 seconds until the CMP Angle parameter matches the Desired CMP parameter. The CMP Variance should again return to less than or equal to 1 degree.
• If the CMP Variance remains more than 1 degree for more than 3 seconds, continue with the Circuit/System Testing.
Circuit/System Testing
1. Ignition OFF, inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications (Specifications) .
• If the crankshaft balancer bolt is not at the proper torque, refer to Crankshaft Balancer Replacement (Service and Repair) .
2. Remove the CMP actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement (Service and Repair) .
3. Connect a jumper wire between the CMP actuator low reference circuit at the solenoid and a good ground. Connect a fused jumper wire to the CMP actuator high control circuit at the solenoid. Momentarily touch the fused jumper to B+. 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. Refer to Camshaft Position Actuator Diagnosis (Component Tests and General Diagnostics) .
5. Inspect the engine for correct valve timing. Refer to Timing Chain and Sprocket Replacement (Service and Repair) .
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Camshaft Position Exhaust Actuator Replacement (Service and Repair)
* Camshaft Position Actuator Solenoid Valve Replacement (Service and Repair)