C3912 Trouble Code

View C3912 obd/2 error code description and symptoms. C3912 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.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

Difficulty Level (Soso)
Level
Repair Time (30 Min.)
Time
Cost Prediction : $ 80-170

C3912 Error Code Repair Process :

The rule of C3912 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 front sounder circuit short to vbatt. Likewise, overriding the OBD C3912 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.

Wrench Tool C3912 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 C3912

A common cause of code C3912 is the failure of Front Sounder Circuit Short to Vbatt, but there are several other possible causes as well, such as ;

C3912 code for all cars

You can view according C3912 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3912 Geely Hq +C3912 Maserati Gt +C3912 Mercedes E 230 +C3912 Opel Kraftfahrzeug +C3912 Jaguar F-type

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