P0016 - CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A)

The CMP (Camshaft Position) sensor and the CKP (Crankshaft Position) sensor work together with the objective of controlling both time and delivery to be compatible. These sensors have a reluctor ring that passes over a magnetic sensor, which in turn generates a voltage that indicates the position of the camshaft and the crankshaft.

The CKP (Crankshaft Position) sensor is part of the primary ignition system and acts as a trigger. This detects the position of the crankshaft relays, which pass the information to the PCM (Powertrain Control Module) to control the time of the ignition spark.

For its part, the CMP (Camshaft Position) sensor detects the position of the camshaft and sends this information to the PCM (Power Train Control Module) who uses this information to identify the beginning of the sequence of the camshaft injector.

These two sensors are joined by the timing belt. Both the cam and the crank must be synchronized accurately. If the PCM detects that the CMP and CKP sensor signals are out of time, in a specific number of degrees, the DTC code P0016 OBD2 is set.

• Check Engine light on the board.
• The engine may not start.
• Engine operation is affected or unstable.

The reasons why the fault code P0016 OBDII can be established are:

• It is possible that the timing belt is worn and this causes one of its areas to jump.
• There is a misalignment of the timing belt.
• Maybe a camshaft ring may be sliding.
• The Crankshaft Position (CPK) Sensor may be defective.
• The Camshaft Position (CMP) Sensor may be defective.

Before the diagnostic code P0016 OBD2 you can do the following:

• Check the condition of the timing belt tensioner. Likewise, the strap fits in it.
• Inspect the timing belt, and make sure it is not stretched.
• Check the CKP (Crankshaft Position Sensor) sensor wiring. If you find problems, repair them.
• Verify that the CMP sensor cable system is in good condition. If you find inconsistency in one of these you must make the necessary repairs.
• If you have access to an endoscope, check the cam and crankshaft patterns. If a pattern is missing, it is likely that one of the sensors is defective or that one of the rings is sliding. To do this you must remove the cam gear as well as the crankshaft balancer. Then, verify that the tone rings are correctly aligned, or that they are not loose. If the installation of these rings is correct, you must change the sensor.