P000D Camshaft 2/2 Position slow response

P000D Camshaft 2/2 Position slow response - based on the parameters, the PCM calculates or models the optimum camshaft position. The camshaft angular position is varied by the oil control valve. The VVT solenoid pushes on a plunger (spring loaded spool valve) in the center of the Oil Control Valve (OCV) which directs oil pressure to the hydraulic actuator (Phaser) on the camshaft sprocket to change the camshaft position relative to the crankshaft position. The VVT solenoid, acting on the Oil Control Valve and phaser is controlled by the PCM. The CMP sensor is used to monitor the position of the camshaft. The diagnostic is primarily performed by comparing the actual camshaft position to that of a calculated model for the camshaft position.

This diagnostic is continuous once the enable conditions are met, however the slow response and target error conditions are not performed simultaneously. The target error diagnostic : evalutes the actual camshaft position versus the modeled position when the camshaft is in a relatively stable position. The difference between the to is considered to be the amount of ''error''. If the error amount is greater than a calibrated threshold, it is considered failing. The slow response diagnostic : is only peformed when the modeled camshaft position is moving (phasing) in a particular direction, advancing or retarding. The modeled camshaft phasing position is created to match only the worst possible cause of phasing camshaft position, If the actual camshaft phasing operates slower than the model by a calibrated threshold, it is considered failing.

If either of these diagnostics fail, the camshaft position slow response DTC will set.

Possible cause P000D code

• Engine oil level low.
• Engine oil aerated or contaminated.
• Incorrect engine oil filter.
• Insufficient oil pressure due to a mechanical filure in the oiling system.
• VVT exhaust solenoid 2/2 faulty or intermittently binding/sticking.
• Camshaft 2/2 oil control valve faulty or intermittently binding/sticking spool valve.
• Camshaft tone wheel misaligned.
• Camshaft 2/2 phaser faulty or intermittently binding/sticking.
• Powertraint Control Module (PCM).

Diagnostic test P000D code

(Sorry!!! Step 1-2, see code P000A)
Step 1. Engine oil/engine mechanical

Step 2. Check the engine oil pressure and engine mechanical condition

(Sorry!!! Step 3-5, see code P000B)

Step 3. Verify an active condition by checking the cam phaser position

Step 4. Determine if the Cam phaser issue is electrical or mechanical

Step 5. Check the Camshaft 2/2 oil control valve operation

Step 6. Check the VVT exhaust solenoid 2/2 operation

Turn the ignition off. With the solenoid still removed, reconnect the VVT exhaust solenoid 2/2 harnes connector. Turn the ignition on, with the scan tool, actuate the VVT exhaust selenoid 2/2 on and off several times.

Does the VVT exhaust solenoid 2/2 move freely without binding or sticking during actuation ?

YES, go to step 7.

NO, replace the VVT exhaust solenoid 2/2, perform the Powertraint verification test.

Step 7. Verify that the VVT exhaust selenoid 2/2 is able to move the phaser

Exchange the VVT exhaust solenoid 2/2 with the other VVT exhaust selenoid 1/2. The intake and exhaust solenoid should not be interchanged. Reconnect the selenoid harnes connector, turn the ignition on, with the scan tool, erase DTC in the PCM. Test drive the vehicle under the conditions in which the fault was set, with the scan tool, read DTC P000D code.

Did the DTC move with the selenoid or stay with the original camshaft ?

Moved with the solenoid, replace the VVT exhaust solenoid 2/2, perform the Powertraint verification test.

Stayed with the original camshaft, go to step 8.

Step 8. Check the exhaust camshaft 2/2 tone wheel

Turn the ignition off, check the alignment of the CMP sensor tone wheel in accordance with the service information.

Is the CMP sensor tone wheel aligned correctly ?

YES, replace the Cam phaser assembly, perform the Powertraint verification test.

NO, replace the intake camshaft assembly, perform the Powertraint verification test.

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