Volvo V90 U0121 Engine Error Code

When you check Volvo V90 car engine light came on code U0121 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Volvo manufacturer may have a different definition for the U0121 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U0121 Volvo V90 engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)

Volvo V90 U0121 OBD-II Diagnostic Network (U) Trouble Code Description Volvo V90 car U0121 OBD-II Trouble Code Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and comm Reason For Volvo V90 U0121 Code The reason of Volvo V90 U0121 OBD-II Engine Error Code is U0121 Lost Communication With Electronic Brake Control Module.

OBD U0121 Volvo V90 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and , while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to U0121 Volvo V90 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for U0121 Volvo V90 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

Volvo V90 U0121 Possible Solution :

What does fault code U0121 mean for Volvo V90 ? What does a diagnostic reading U0121 mean for Volvo V90 ? How to fix OBD2 Code U0121 for Volvo V90 ? What do we know about U0121 code for Volvo V90 ?