U3449 Volvo 740 OBD Code

OBD/2 U3449 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as U3449. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for U3449

Regardless of the design though, the purpose of all clutch actuating systems is to improve the driving experience by removing the need for manual clutch operation by the driver. Computer-controlled clutch actuating systems work particularly well in dual clutch systems where one clutch controls gear changes of even-numbered gear ratios, and a second clutch that controls gear changes of odd-numbered ratios.

U3449 Volvo 740 Error Code Repair Process :

If your cylinder #5 high to low side open check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U3449 and engine control unit are in charge of monitoring a bunch of different cylinder #5 high to low side open, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Volvo 740 U3449 OBD2 Code

A common cause of code U3449 is the failure of Cylinder #5 High To Low Side Open, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty Air Flow Meter
Fuel injector leaks
Open VPWR circuit

U3449 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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U3449 Volvo 740 OBD Code

U3449 Volvo 740 Error Code Repair Process :

Common Causes of Volvo 740 U3449 OBD2 Code

U3449 code for other Volvo cars