Cruze

DTC P0016 or P0340

The camshaft position sensor correlates the crankshaft to camshaft position so that the engine control module (ECM) can determine which cylinder is ready to be fuelled by an injector. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor and sends a signal to the ECM through the signal circuit. The camshaft position sensor circuits are directly connected to the ECM. The camshaft position sensor also determines which cylinder is misfiring. The camshaft position sensor circuits consist of the following:

P0016

The ECM detects an incorrect camshaft position sensor signal for greater than 10 crankshaft revolutions.

P0340

The ECM detects no camshaft position sensor signal for greater than 2 s.

DTCs P0016 00 and P0340 00 are Type B DTC.

DTCs P0016 00 and P0340 00 are Type B DTC.

The following conditions can also set the DTC:

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

1. Engine running, observe the DTC information with a scan tool. DTC P0016 00 and P0340 00 should not set.
2. 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.

1. Inspect the engine or review the service history of the vehicle for any recent repairs involving the timing belt, B23 Camshaft Position Sensor or B26 Crankshaft Position Sensor.
2. Ignition OFF, disconnect the harness connector at the B23 Camshaft Position Sensor.
3. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 1 and ground.

⇒	If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse F47 is open, test all components connected to the ignition voltage circuit and replace as necessary.

4. Connect a test lamp between the ground circuit terminal 2 and the ignition voltage circuit terminal 1. Verify the test lamp illuminates.

⇒	If the test lamp does not illuminate, repair the ground circuit for an open/high resistance.

5. Ignition ON, test for 4.2-5.2 V between the signal circuit terminal 3 and the ground circuit terminal 2.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

6. Test for the following conditions:

•	The correct installation of the B23 Camshaft Position Sensor

•	The correct installation of the B26 Crankshaft Position Sensor

•	A timing belt tensioner condition

•	An incorrectly installed timing belt

•	A timing belt that jumped teeth

•	A crankshaft or camshaft reluctor wheel that has moved in relationship to top dead centre (TDC) on the crankshaft

⇒	If you find any of the above conditions, repair as necessary.

7. If all circuits test normal, test or replace the B23 Camshaft Position Sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.