Volvo 960 / V90 I6 ECU Up for sale is a Working, in excellent condition Volvo 960 Inline 6 non turbo ECU. Should fit many 1996 and later 960 / V90 models. - OBD2 cars. Bosch Part number Part Number(s): Bosch 0261204239 ( 0 261 204 239 ) Volvo 1270422 . Please check the part number off of your original unit to be sure if this is correct for your car. A Faulty ECU can cause many different problems with these cars. I have commonly seen no start or random stalling problems with these units (caused by a faulty injector driver) . Also, these can cause issues with erroneous check engine lights as well as emission control & cold or hot start problems. An erroneous check engine light is especially problematic, as the car will not pass the emissions portion of the test at the annual state inspection.