C0406 Mercedes-benz 130 OBD Code

OBD/2 C0406 error code description and symptoms.

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 C0406 as an indication of a hard fault.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

C0406 Mercedes-benz 130 Error Code Repair Process :

If your air bag crash sensor #1 ground circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0406 and engine control unit are in charge of monitoring a bunch of different air bag crash sensor #1 ground circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes-benz 130 C0406 OBD2 Code

A common cause of code C0406 is the failure of Air Bag Crash Sensor #1 Ground Circuit Failure, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Damaged VCT phaser
Faulty variable valve timing (VVT)
EVAP system hose leaking

C0406 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.

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

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C0406 Mercedes-benz 130 OBD Code

C0406 Mercedes-benz 130 Error Code Repair Process :

Common Causes of Mercedes-benz 130 C0406 OBD2 Code

C0406 code for other Mercedes-benz cars