Engine - Hard Start/Rattles/MIL ON/DTC P001600

01 MIL on, noise from timing chain (DTC P001600)

15 10 01

2023107/1

April 27, 2010





Affected Vehicles

Condition

^ MIL on.

^ Engine difficult to start. Sometimes rattle in engine compartment.

^ DTC P001600 (bank 1, camshaft position G40 /crankshaft position sensor G28, wrong assignment) stored in engine control unit.

^ Possible damage to camshaft or camshaft bearing surfaces.

Technical Background

The check valve ball in the camshaft positioner bridge may become dislodged. Fragments of the screen and the ball can restrict oil flow to the bearing bridge.

Particles of the screen can also reach the camshafts and damage the bearing surfaces.

Production Solution

Optimized oil check valve in camshaft positioner bridge as of calendar week 23/2009.

Service

Check for damage





1. Check the non-return valve in the bearing bridge for wear.





2. Check the chain tensioner.

3. Check camshaft surfaces for damage.

Procedure

^ If the screen and check valve are not damaged:

a. Replace the camshaft and bridge.

b. Erase the DTC.

^ If the screen or check valve are damaged:

a. Inspect bearing surfaces of camshafts for scoring marks.

b. Replace any camshaft or cylinder head that has camshaft bearing damage.








Warranty

Additional Information

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.