The fault code>>B1031 - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 05-30-2008, 09:35 AM Thread Starter
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Question The fault code>>B1031

Hi all,there is a c-class which the VIN is WDB2030452F014210 drove into our workshop and said the car has current leak during the engine off.i heard there is a sound which came from the fan inside the Over head control panel.
second,LIGHT SENSOR shown in the instrument cluster.The headlights was on when i turned the light switch to AUTO under the sunlight.
i ran short test by star diagnostic and found B1031 CONTROL MODULE OCP IS NOT SENDING ANY DATA. is it the OCP is the main problem?
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post #2 of 2 (permalink) Old 05-31-2008, 03:52 AM
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what exactly is the issue with the car. when doing a short test you may always see fault codes which say "ocp, eis, rear sam is not sending any data on the can bus". this doesnt mean the control unit is faulty. sometimes a unit will stop sending data for a second. thats normal.
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