C3641 Buick Allure OBD Code

OBD/2 C3641 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 C3641 as an indication of a hard fault.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

C3641 Buick Allure Error Code Repair Process :

If your wheel speed sensor rf tone ring tooth missing fault 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 C3641 and engine control unit are in charge of monitoring a bunch of different wheel speed sensor rf tone ring tooth missing fault, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Buick Allure C3641 OBD2 Code

A common cause of code C3641 is the failure of Wheel Speed Sensor RF Tone Ring Tooth Missing Fault, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
1Camshaft Position Sensor circuit poor electrical connection
Failures of clutch motion/travel sensors.
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1

C3641 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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C3641 Buick Allure OBD Code

C3641 Buick Allure Error Code Repair Process :

Common Causes of Buick Allure C3641 OBD2 Code

C3641 code for other Buick cars