On the vehicle specified above, a complaint has been made that the engine warning light illuminates when traveling downhill over longer distances.
In addition, error codes P0201, P0202, P0203 and P0204 (synonymous with: injection valve / nozzle 1-4, power circuit malfunction) are stored in the engine control unit.
The cause could be a faulty calibration of the engine control unit.
The vehicle manufacturer has already addressed the issue.
A software update is available from CW 5 / 2013.
A changed software shall be used in the production from November 26, 2012 and chassis number WOLF7B1AEDV602062.
Important safety note
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