C2123 Trouble Code

View C2123 obd/2 error code description and symptoms. C2123 engine photo

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.

C2123 Error Code Repair Process :

The rule of C2123 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of needle lift sensor malfunction. Likewise, overriding the OBD C2123 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

C2123 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C2123

A common cause of code C2123 is the failure of Needle Lift Sensor Malfunction, but there are several other possible causes as well, such as ;

Dirty Oil
Camshaft Position Sensor harness is open or shorted
Incorrect fuel pressure
Ignition coils harness is open or shorted

C2123 code for all cars

You can view according C2123 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C2123 Mercedes-benz W110

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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