U3303 Citroen C5 Ii OBD Code

OBD/2 U3303 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.

U3303 Citroen C5 Ii Error Code Repair Process :

The rule of U3303 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 engine coolant temperature (ect) sensor circuit intermittent low voltage/iat - b circuit low input. Likewise, overriding the OBD U3303 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.

Common Causes of Citroen C5 Ii U3303 OBD2 Code

A common cause of code U3303 is the failure of Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Engine Control Module (ECM)
Incorrect fuel pressure
Oil Control Valve (OCV) circuit is open or shorted

U3303 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

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

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U3303 Citroen C5 Ii OBD Code

U3303 Citroen C5 Ii Error Code Repair Process :

Common Causes of Citroen C5 Ii U3303 OBD2 Code

U3303 code for other Citroen cars