00022 - P0016 - Bank 1, camshaft position sensor (G40) crankshaft position sensor (G28). Incorrect numbering.
Fault code recorded in the engine control unit.
The vehicle displays one or several of the following symptoms:
- Squeaking, rattling or jingling noises coming from the front part of the vehicle.
- Engine does not start.
- Engine warning light (MIL) ON.
NOTE: The above - mentioned symptom appears again when starting the engine.
NOTE: This technical note affects only those vehicles that are within a specific VIN (vehicle identification number) range.
Malfunction of the timing chain tensioner.
- Read the fault codes recorded in the engine control unit using the diagnostic tool.
- Confirm that the fault code is the same as the one that appears in the field symptoms of this bulletin.
- Confirm that the symptoms that appear in the field symptoms of this bulletin are reproduced.
- Check the version of the timing chain tensioner.
If the tensioner is the same as the one in image 1:
- Check the piston and valves, check if the piston of the tensioner can be pressed in by hand.
- Replace the engine if the valves and pistons have touched each other.
- Replace the tensioner and the timing chain with a modified version if the tensioner is the same as the one in image 1.
If the tensioner is the same as the one in image 2:
- Check the camshaft bearing and the inlet camshaft if the piston of the tensioner cannot be pressed in by hand.
- Replace the cylinder head if there is damage in the camshaft bearing or inlet camshaft.
- Replace the timing chain if the tensioner is the same as the one in image 2.
- Carry out an oil and filter change.
- Clear the fault codes recorded in the engine control unit using the diagnostic tool.
- Carry out a second fault code reading of the engine control unit (ECU) using the diagnostic tool and confirm that NO fault codes are recorded.
Bear in mind the following:
- Remove the engine block.
- Check the condition of the retention valve.
- If it is broken, replace and remove any possible pieces of the valve from the lubricant circuit.
NOTE: The reference number of the replacement part depends on the manufacturing date of the vehicle.
See image 1:
A - Tensioner with 4 grooves.
See image 2:
A - Tensioner with more than 6 grooves but only 4 visible.