U229U Mazda Axela OBD Code

OBD/2 U229U 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.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

U229U Mazda Axela Error Code Repair Process :

If your abs outlet valve coil lf circuit 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 U229U and engine control unit are in charge of monitoring a bunch of different abs outlet valve coil lf circuit open, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mazda Axela U229U OBD2 Code

A common cause of code U229U is the failure of ABS Outlet Valve Coil LF Circuit Open, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty Variable Camshaft Timing (VCT) position solenoid
Fuel Injectors circuit poor electrical connection
Camshaft advance mechanism binding (VCT unit)

U229U 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

U229U Mazda Axela OBD Code

U229U Mazda Axela Error Code Repair Process :

Common Causes of Mazda Axela U229U OBD2 Code

U229U code for other Mazda cars