DTC P0016, P0017, P0018, or P0019 (LF1, LFW or LFX)
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DTC P0016, P0017, P0018, or P0019 (LF1, LFW or LFX)
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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
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Circuit/System Description
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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.
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Conditions for Running the DTC
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P0016
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DTCs P0040, P0041, P0335, P0336, P0641 and P0651 are not generated.
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The engine is running or running on the starter motor.
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The crankshaft and camshaft position signals are synchronized.
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Camshaft position actuator in parking position.
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DTCs P0016, P0017, P0018, and P0019 run continuously when the above conditions are met.
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P0017
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DTCs P0335, P0336, P0641 and P0651 are not generated.
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The engine is running or running on the starter motor.
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The crankshaft and camshaft position signals are synchronized.
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Camshaft position actuator in parking position.
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DTCs P0016, P0017, P0018, and P0019 run continuously when the above conditions are met.
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Conditions for Setting the DTC
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DTC P0016, P0017, P0018, or P0019
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The ECM detects that one camshaft is misaligned with the crankshaft. The ECM detects one of the following conditions:
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Bank 1 intake camshaft is greater than 9° retarded or 12° advanced in relationship to the crankshaft.
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Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
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Bank 2 intake camshaft is greater than 11° retarded or 13° advanced in relationship to the crankshaft.
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Bank 2 exhaust camshaft is greater than 9° retarded or 13° advanced in relationship to the crankshaft.
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The ECM detects that all 4 camshafts are misaligned with the crankshaft. The ECM detects one of the following conditions:
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Bank 1 intake camshaft is greater than 9° retarded or 12° advanced in relationship to the crankshaft.
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Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
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Bank 2 intake camshaft is greater than 6° retarded or 7° advanced in relationship to the crankshaft.
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Bank 2 exhaust camshaft is greater than 9° retarded or 9° advanced in relationship to the crankshaft.
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DTC P0016
The ECM detects that both camshafts on bank 1 are misaligned with the crankshaft. The ECM detects the following conditions:
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Bank 1 intake camshaft is greater than 6° retarded or 12° advanced in relationship to the crankshaft.
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Bank 1 exhaust camshaft is greater than 10° retarded or 13° advanced in relationship to the crankshaft.
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DTC P0018 and P0019
The ECM detects that both camshafts on bank 2 are misaligned with the crankshaft. The ECM detects the following conditions:
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Bank 2 intake camshaft is greater than 6° retarded or 9° advanced in relationship to the crankshaft.
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Bank 2 exhaust camshaft is greater than 7° retarded or 9° advanced in relationship to the crankshaft.
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Action Taken When the DTC Sets
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DTCs P0016, P0017, P0018, and P0019 are type B DTCs.
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Conditions for Clearing the DTC
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DTCs P0016, P0017, P0018, and P0019 are type B DTCs.
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Inspect the engine for any recent engine mechanical repairs. An incorrectly installed secondary timing chain can cause this DTC to set.
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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.
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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 centre (TDC).
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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.
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Schematic Reference
Engine Controls Schematics (3.0L (LF1))
Engine Controls Schematics (2.8L (LAU))
Connector End View Reference
Component Connector End Views
Description and Operation
Camshaft Actuator System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
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1.
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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.
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Idle the engine at normal operating temperature. DTCs P0016, P0017, P0018, or P0019 should not set.
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4.
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If a DTC sets, inspect for the following and repair as necessary:
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The correct installation of the camshaft sensors
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The correct installation of the crankshaft sensor
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A timing chain tensioner condition
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An incorrectly installed timing chain
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Excessive play in the timing chain
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A mechanical cam actuator that is stuck in the full advance or retard position.
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A timing chain that jumped teeth
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A crankshaft reluctor wheel that has moved in relationship to top dead centre (TDC) on the crankshaft
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5.
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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.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
