U2955 Mitsubishi Space Runner OBD Code

OBD/2 U2955 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.

U2955 Mitsubishi Space Runner Error Code Repair Process :

For fuel pump secondary circuit intermittent check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. U2955 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks fuel pump secondary circuit intermittent with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Mitsubishi Space Runner U2955 OBD2 Code

A common cause of code U2955 is the failure of Fuel Pump Secondary Circuit Intermittent, but there are several other possible causes as well, such as ;

Dirty Oil
Engine Control Module (ECM)
Fuel injector leaks
Fuel injectors harness is open or shorted

U2955 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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U2955 Mitsubishi Space Runner OBD Code

U2955 Mitsubishi Space Runner Error Code Repair Process :

Common Causes of Mitsubishi Space Runner U2955 OBD2 Code

U2955 code for other Mitsubishi cars