U3889 Toyota Fj OBD Code

OBD/2 U3889 error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code U3889

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

U3889 Toyota Fj Error Code Repair Process :

If your transmission transfer case rear shaft speed sensor circuit failure 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 U3889 and engine control unit are in charge of monitoring a bunch of different transmission transfer case rear shaft speed sensor circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Toyota Fj U3889 OBD2 Code

A common cause of code U3889 is the failure of Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty front heated oxygen sensor
Camshaft advance mechanism binding (VCT unit)
Faulty Variable Camshaft Timing (VCT) position solenoid

U3889 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.

About Us | Contact | Privacy

U3889 Toyota Fj OBD Code

U3889 Toyota Fj Error Code Repair Process :

Common Causes of Toyota Fj U3889 OBD2 Code

U3889 code for other Toyota cars