U3331 Dodge Neon OBD Code

OBD/2 U3331 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.

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.

U3331 Dodge Neon Error Code Repair Process :

The rule of U3331 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 fuel restriction condition. Likewise, overriding the OBD U3331 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 Dodge Neon U3331 OBD2 Code

A common cause of code U3331 is the failure of Fuel Restriction Condition, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
1Camshaft Position Sensor circuit poor electrical connection
Camshaft advance mechanism binding (VCT unit)
Fuel tank leaking

U3331 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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U3331 Dodge Neon OBD Code

U3331 Dodge Neon Error Code Repair Process :

Common Causes of Dodge Neon U3331 OBD2 Code

U3331 code for other Dodge cars