U0666 Mercedes-benz Slr Class OBD Code

OBD/2 U0666 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.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

U0666 Mercedes-benz Slr Class Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U0666 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 alternative fuel controller 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 alternative fuel controller.

Common Causes of Mercedes-benz Slr Class U0666 OBD2 Code

A common cause of code U0666 is the failure of Alternative Fuel Controller, but there are several other possible causes as well, such as ;

Dirty Oil
Damaged camshaft position (CMP) sensor
Fuel pressure
Engine Control Module (ECM)

U0666 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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U0666 Mercedes-benz Slr Class OBD Code

U0666 Mercedes-benz Slr Class Error Code Repair Process :

Common Causes of Mercedes-benz Slr Class U0666 OBD2 Code

U0666 code for other Mercedes-benz cars