P0017
DTC P0016, P0017, P0018, or P0019
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0016
- Crankshaft Position - Intake Camshaft Position Not Plausible Bank 1
DTC P0017
- Crankshaft Position - Exhaust Camshaft Position Not Plausible Bank 1
DTC P0018
- Crankshaft Position - Intake Camshaft Position Not Plausible Bank 2
DTC P0019
- Crankshaft Position - Exhaust Camshaft Position Not Plausible Bank 2
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. An improper relative position can be caused by either engine timing or improper indexing of the camshaft drive chain.
Conditions for Running the DTC
P0016
* DTC P0040, P0041, P0335, P0336, P0641, and P0651 are not set.
* The engine is cranking or running.
* The crankshaft and camshaft position signals are synchronized.
* The camshaft position actuator is in the parked position.
* DTC P0016, P0017, P0018, and P0019 run continuously when the above conditions are met.
P0017
* DTC P0335, P0336, P0365, P0366, P0641, and P0651 are not set.
* The engine is cranking or running.
* The crankshaft and camshaft position signals are synchronized.
* The camshaft position actuator is in the parked position.
* DTC P0016, P0017, P0018, and P0019 run continuously when the above conditions are met.
P0018 or P0019
* DTC P0018, P0019, P0335, P0336, P0345, P0346, P0390, P0391, P0641, and P0651 are not set.
* The engine is cranking or running.
* The crankshaft and camshaft position signals are synchronized.
* The camshaft position actuator is in the parked position.
* DTC P0016, P0017, P0018, and P0019 run continuously when the above conditions are met.
Conditions for Setting the DTC
DTC P0016, P0017, P0018, or P0019
* The ECM detects that one camshaft is mis-aligned with the crankshaft. The ECM detects one of the following conditions:
- Bank 1 intake camshaft is greater than 9° retarded or 12° advanced in relationship to the crankshaft.
- Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
- Bank 2 intake camshaft is greater than 11° retarded or 13° advanced in relationship to the crankshaft.
- Bank 2 exhaust camshaft is greater than 9° retarded or 13° advanced in relationship to the crankshaft.
* The ECM detects that all 4 camshafts are mis-aligned with the crankshaft. The ECM detects the following conditions:
- Bank 1 intake camshaft is greater than 6° retarded or 12° advanced in relationship to the crankshaft.
- Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
- Bank 2 intake camshaft is greater than 6° retarded or 9° advanced in relationship to the crankshaft.
- Bank 2 exhaust camshaft is greater than 7° retarded or 9° advanced in relationship to the crankshaft.
DTC P0016 and P0017
The ECM detects that both camshafts on bank 1 are mis-aligned with the crankshaft. The ECM detects the following conditions:
* Bank 1 intake camshaft is greater than 6° retarded or 12° advanced in relationship to the crankshaft.
* Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
DTC P0018 and P0019
The ECM detects that both camshafts on bank 2 are mis-aligned with the crankshaft. The ECM detects the following conditions:
* Bank 2 intake camshaft is greater than 6° retarded or 9° advanced in relationship to the crankshaft.
* Bank 2 exhaust camshaft is greater than 7° retarded or 9° advanced in relationship to the crankshaft.
Action Taken When the DTC Sets
DTCs P0016, P0017, P0018, and P0019 are type B DTCs.
Conditions for Clearing the DTC
DTCs P0016, P0017, P0018, and P0019 are type B DTCs.
Diagnostic Aids
The following conditions can also set the DTC::
* Physical damage to the crankshaft/camshaft position sensor or the reluctor wheel.
* Excessive play or looseness of the crankshaft/camshaft position sensor or the reluctor wheel.
* Improper installation of the crankshaft/camshaft position sensor or the reluctor wheel.
* Foreign material passing between the crankshaft/camshaft position sensor and the reluctor wheel.
* Excessive air gap between the crankshaft/camshaft position sensor and the reluctor wheel.
* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed secondary timing chain can cause this DTC to set.
* This diagnostic algorithm is designed to detect an alignment condition between a primary intermediate sprocket and the secondary timing chain, or the alignment between a primary intermediate sprocket and the crankshaft. Either condition would cause the camshaft timing for both cams on one bank to be off an equal number of degrees.
* DTCs P0016, P0017, P0018, and P0019 set at the same time indicates a possible condition with the primary timing chain and the alignment between both intermediate sprockets and the crankshaft. Or, the crankshaft reluctor wheel has moved and is no longer referenced to top dead center (TDC).
* Observing the desired and actual camshaft angle parameters, with a scan tool before a DTC sets, may help to isolate whether a condition is specific to one camshaft, one bank, or caused by a condition with the primary crankshaft timing.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views A/C Compressor Clutch
Description and Operation
Camshaft Actuator System Description Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Engine running at the normal operating temperature.
2. Verify DTC P0016, P0017, P0018 or P0019 is not set.
• If any of the DTCs are set
Refer to Circuit/System Testing
• If none of the DTCs set
3. Operate the vehicle within the Conditions for Running the DTC to verify any of the DTCs do not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify any of the DTCs do not set.
• If any of the DTCs are set
Refer to Circuit/System Testing
• If none of the DTCs set
5. All OK
Circuit/System Testing
Inspect for the following and repair as necessary:
* The correct installation of the camshaft sensors
* The correct installation of the crankshaft sensor
* A timing chain tensioner condition
* An incorrectly installed timing chain
* Excessive play in the timing chain
* A mechanical cam actuator that is stuck in the full advance or retard position
* A timing chain that jumped teeth
* A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Camshaft Timing Drive Components Cleaning and Inspection Camshaft Timing Drive Components Cleaning and Inspection
* Crankshaft and Bearing Cleaning and Inspection Crankshaft and Bearing Cleaning and Inspection
* Timing Chain Alignment Diagram Locations
* Primary Camshaft Drive Chain and Sprockets Replacement Primary Camshaft Drive Chain and Sprockets Replacement