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DTC P0016, P0017, P0018, or P0019 (Without LF1, LFW)

DTC P0016, P0017, P0018, or P0019 (Without LF1, LFW)

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• 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 sensor and the camshaft position 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


• DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 are not set.

• The engine is operating for greater than 2 s.

• The engine must accelerate such that the CMP actuator system is commanded from the park position to the phased position. This is considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 s each, in the phased position.

• DTC P0016, P0017, P0018, and P0019 run continuously when the above conditions are met for approximately 10 min.


Conditions for Setting the DTC

The ECM detects the ECM learned camshaft position angle is greater than 10 degrees advanced or 10 degrees retarded in relationship to the crankshaft.

OR

The ECM detects the actual camshaft angle is advanced 15 degrees or retarded 21 degrees in relationship to the camshaft parked/reference position for greater than 10 s.

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


• Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, camshaft sensor, crankshaft sensor, or timing chain can cause this DTC to set.

• An actuator that is in the full advance or retard position can cause this DTC to set.

• The presence of DTCs P0008 and P0009 along with P0016, P0017, P0018, and P0019 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

Connector End View Reference

Component Connector End Views

Description and Operation

Camshaft Actuator System Description

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing


1. Ignition ON, observe the DTC information with a scan tool. Verify that none of the following DTCs are set. DTC P0010, P0013, P0020, P0023, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095.

2. If any of the DTCs listed are set refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

3. Idle the engine at normal operating temperature for 10 minutes. Diagnostic trouble codes P0016, P0017, P0018 or P0019 must not be activated.

4. If a DTC sets, 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 timing chain that jumped teeth

• A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft

5. 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.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Timing Chain Alignment Diagram

• Camshaft Timing Drive Components Cleaning and Inspection

• Crankshaft and Bearing Cleaning and Inspection