C200 W203 P1664 Error
07-25-2016, 08:18 AM
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W204, 2010, 1.8 CGI Automatic 5G
C200 W203 P1664 Error
Hi. I have used program like Carsoft to diagnose my MB c200 cdi, w203. I've got one error P1664 - Electric heater booster - permamently. About 1 month ago I've changed my thermostat. For about 15 minutes driving (in city, about 7 km) in 25-30 degrees C I've got about 92 degrees(or a little bit more). Should I change for this electric heater booster fot the new one ? Or can I repair that without buying a new ? Is it normal temperature for diesel engine, isn't it too much ? Thanks in advance for help 
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