DATE: May 17, 2007
FLASH: DTC’s C121A / C2205 – Steering Angle Sensor – Not Initialized / Internal
This bulletin involves selectively erasing and reprogramming the Steering Angle Sensor (SAS) with new software.
The vehicle operator may experience an illumination of the Electronic Stability Program (ESP) lamp on the vehicle instrument cluster. The ESP lamp illumination may be due to the following Diagnostic Trouble Codes (DTC’s):
C121A – Steering Angle Sensor Not Initialized
C2205 – Steering Angle Sensor Internal
This condition, and DTC’s, may be intermittent. If the above DTC’s occur during a drive cycle, then the ESP lamp will remain illuminated until the end of that drive cycle (key off).
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