Engine Controls - MIL ON And P2015, P2020 Stored: Overview
01 MIL on P2015, P202001 12 55
2030192/1
October 22, 2012.
Affected Vehicles
Condition
Customer statement: MIL light on.
Workshop findings:
P2015 sender of intake manifold flap position/air flow control, implausible signal
P2020 sender of intake manifold flap position, intake manifold flap 2, implausible signal
Engine may have reduced performance without significant loss of power or stalling
Technical Background
Check service history to see if the improved "B" suffix V157 Intake Flap motor has already been installed previously; if yes, only replace the potentiometer seals as described below.
The fault entry is made because a linkage of the intake manifold flap adjustment sticks.
This is caused by deformed oil seal behind the potentiometers.
When the potentiometer is removed, the oil seal can be seen, as shown in Figures 2 and 3.
^ Figure 2 shows a correct oil seal.
^ Figure 3 shows a deformed oil seal which causes the sticking.
Production Solution
Not applicable.
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.