C3879 Trouble Code

View C3879 obd/2 error code description and symptoms. C3879 engine photo

EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on.
The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to PWR VREF open to D.P.F. EGR sensor D.P.F. EGR sensor downstream hose off or plugged EGRVR circuit open to PCM VPWR open to EGRVR solenoid D.P.F. EGR sensor hoses both off D.P.F. EGR sensor hoses reversed Damaged EGR orifice tube Damaged EGRVR solenoid Damaged PCM Perform KOER self-test and look for DTC C3879 as an indication of a hard fault.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C3879, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C3879 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C3879 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3879 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 left front sensor circuit short to vbat 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 left front sensor circuit short to vbat.

C3879 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 C3879

A common cause of code C3879 is the failure of Left Front Sensor Circuit Short to Vbat, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Faulty select solenoid
Engine Control Module (ECM)
Fuel Injectors circuit poor electrical connection

C3879 code for all cars

You can view according C3879 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3879 Hyundai Kona

+C3879 Nissan Qashqai

+C3879 Peugeot Oxia

+C3879 Fiat Grande Punto

+C3879 Vaillante Grand Defi

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