U3481 Vauxhall Viceroy OBD Code

OBD/2 U3481 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.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

U3481 Vauxhall Viceroy Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U3481 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If a/c clutch circuit fault so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the a/c clutch circuit fault.

Common Causes of Vauxhall Viceroy U3481 OBD2 Code

A common cause of code U3481 is the failure of A/C Clutch Circuit Fault, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty select solenoid
Fuel filler cap remains open or fails to close
Open circuits caused by damage to wiring.

U3481 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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U3481 Vauxhall Viceroy OBD Code

U3481 Vauxhall Viceroy Error Code Repair Process :

Common Causes of Vauxhall Viceroy U3481 OBD2 Code

U3481 code for other Vauxhall cars