U3021 Dodge Viper OBD Code

OBD/2 U3021 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as U3021. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for U3021

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

U3021 Dodge Viper Error Code Repair Process :

If your crankshaft position sensor a circuit range/performance 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 U3021 and engine control unit are in charge of monitoring a bunch of different crankshaft position sensor a circuit range/performance, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Dodge Viper U3021 OBD2 Code

A common cause of code U3021 is the failure of Crankshaft Position Sensor A Circuit Range/Performance, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Failures of clutch motion/travel sensors.
Continuous oil flow to the VCT piston chamber
1Camshaft Position Sensor circuit poor electrical connection

U3021 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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U3021 Dodge Viper OBD Code

U3021 Dodge Viper Error Code Repair Process :

Common Causes of Dodge Viper U3021 OBD2 Code

U3021 code for other Dodge cars