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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Controls - 3.6L - Diagnosis (DTC P0008 - P0151)) >> Diagnosis >> DTC P0016, P0017, P0018, or P0019 >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step determines if there is a condition present.
  2. 4:  The listed DTCs may cause this DTC to set.
  3. 5:  Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft or timing chain can cause this DTC to set.
DTC P0016, P0017, P0018, or P0019

Step Action Values Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference:  Engine Control Module (ECM) Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check-Engine Controls? - Go to Step 2  Go to Diagnostic System Check - Engine Controls
2 
  1. Start the engine.
  2. Allow the engine to reach the normal operating temperature.
  3. Allow the engine to idle for the specified amount of time.
  4. Observe the DTC information with a scan tool.
Does the scan tool display DTC P0016, P0017, P0018, or P0019 failed this ignition?		 10 Minutes Go to Step 4  Go to Step 3 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4  Observe the DTC Information with a scan tool.
Does the scan tool display that 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 also failed this ignition?		 - Go to Diagnostic Trouble Code (DTC) List Go to Step 5 
5  Repair one of the following conditions:
  • For the correct installation of the camshaft sensors.
  • For the correct installation of the crankshaft sensor.
  • For a timing chain tensioner condition.
  • For an incorrectly installed timing chain.
  • For excessive play in the timing chain.
  • For a timing chain that jumped teeth.
  • A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft

Refer to Camshaft Timing Drive Chain Alignment Diagram , Camshaft Timing Drive Components Cleaning and Inspection and Crankshaft and Bearings Cleaning and Inspection in Engine Mechanical - 3.6L (LY7).
Did you complete the repair?		 - Go to Step 6  -
6
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 7 
7 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List System OK
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