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DTC P0016, P0017, P0018, or P0019 - LF1, LFW or LFX

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 (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 synchronised.
    • 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 synchronised.
    • 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 synchronised.
    • 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 misaligned 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 misaligned with the crankshaft. The ECM detects 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 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

The ECM detects that both camshafts on bank 1 are misaligned 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 misaligned 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
    • 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

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, P0340, P0341, P0345, P0346, P0365, P0366, P0390, or P0391.
    2. ⇒If any of the DTCs listed are set refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
  2. Idle the engine at normal operating temperature. DTCs P0016, P0017, P0018, or P0019 should not set.
    3. ⇒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 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
  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.

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
   


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