U3873 Toyota Corona OBD Code

OBD/2 U3873 error code description and symptoms.

Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator Damaged PCM An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault.

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.

U3873 Toyota Corona Error Code Repair Process :

If your transmission transfer case clockwise shift relay coil open circuit 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 U3873 and engine control unit are in charge of monitoring a bunch of different transmission transfer case clockwise shift relay coil open circuit, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Toyota Corona U3873 OBD2 Code

A common cause of code U3873 is the failure of Transmission Transfer Case Clockwise Shift Relay Coil Open Circuit, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Dirty Oil
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Faulty Variable Camshaft Timing (VCT) position solenoid

U3873 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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U3873 Toyota Corona OBD Code

U3873 Toyota Corona Error Code Repair Process :

Common Causes of Toyota Corona U3873 OBD2 Code

U3873 code for other Toyota cars