Engine - MIL ON/DTC's P2187/P2197/P2279/Oil Leaks
01 MIL on (P1297, P2187, P2279), oil leaks01 12 44
2015505/10
March 16, 2012.
Supersedes Technical Service Bulletin Group 01 number 11 - 37 dated November 23, 2011 for reasons listed below.
Affected Vehicles
Condition
One or more of the following conditions may be present:
^ MIL on, and one or more of following DTCs are stored in ECM data memory:
^ P1297 (Connection charger-throttle valve, pressure loss).
^ P2187 (Fuel trim bank 1, system too lean at idle speed).
^ P2279 (Intake air system leak).
^ Whistle noise, air rushing noise from engine.
^ Oil leaks from oil filler cap.
Technical Background
The conditions described may be caused by a malfunction of the crankcase ventilation pressure regulating valve or turbo intake pipe (Figure 1), resulting in excessive vacuum or excessive pressure being applied to the engine crankcase.
The guide pin of the check valve in the intake manifold side of the valve (Figure 2) may break, preventing the check valve from correctly sealing when boost pressure is present in the intake manifold. Intake boost pressure may thus be applied to the engine crankcase, resulting in possible oil leaks.
A whistling noise or air rushing sound may be the consequence of an excessive amount of vacuum being applied to the engine crankcase. This condition can be detected by verifying whether the oil filler cap is being firmly held in position to the engine even after it has been unlocked.
Production Solution
Improved crankcase pressure regulating valve and turbo intake pipe.
Service
1. Verify that 17D9 UPDATE - Pressure Control Valve (Warr_Ext) has been performed (if applicable).
2. Remove Pressure Control Valve and check part number. (See table below).
If Improved crankcase pressure regulating valve and turbo pipe already installed
Repair vehicle as per GFF diagnostic result and replace only the component causing the malfunction.
If Old style valve and pipe installed:
Install improved pressure regulating valve and/or turbo pipe according to table above.
Note:
Verify application for vehicle VIN in ETKA.
Warranty
Required Parts and Tools
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.