U3423 Kia All-new OBD Code

OBD/2 U3423 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

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.

U3423 Kia All-new Error Code Repair Process :

If your wastegate control valve performance 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 U3423 and engine control unit are in charge of monitoring a bunch of different wastegate control valve performance, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Kia All-new U3423 OBD2 Code

A common cause of code U3423 is the failure of Wastegate Control Valve Performance, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty select solenoid
Incorrect fuel pressure
Variable Camshaft Timing (VCT) position circuit is open or shorted

U3423 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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U3423 Kia All-new OBD Code

U3423 Kia All-new Error Code Repair Process :

Common Causes of Kia All-new U3423 OBD2 Code

U3423 code for other Kia cars