C0454 Citroen C4 Ii OBD Code

OBD/2 C0454 error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C0454 Citroen C4 Ii Error Code Repair Process :

If your seat front up/down potentiometer feedback circuit open 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 C0454 and engine control unit are in charge of monitoring a bunch of different seat front up/down potentiometer feedback circuit open, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Citroen C4 Ii C0454 OBD2 Code

A common cause of code C0454 is the failure of Seat Front Up/Down Potentiometer Feedback Circuit Open, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Engine Control Module (ECM)
Exhaust tube
Open circuits caused by damage to wiring.

C0454 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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C0454 Citroen C4 Ii OBD Code

C0454 Citroen C4 Ii Error Code Repair Process :

Common Causes of Citroen C4 Ii C0454 OBD2 Code

C0454 code for other Citroen cars