U1309 Fiat 520 OBD Code

OBD/2 U1309 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 U1309. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for U1309

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

U1309 Fiat 520 Error Code Repair Process :

If your wiper rear motor run relay circuit short to battery 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 U1309 and engine control unit are in charge of monitoring a bunch of different wiper rear motor run relay circuit short to battery, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Fiat 520 U1309 OBD2 Code

A common cause of code U1309 is the failure of Wiper Rear Motor Run Relay Circuit Short to Battery, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

U1309 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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U1309 Fiat 520 OBD Code

U1309 Fiat 520 Error Code Repair Process :

Common Causes of Fiat 520 U1309 OBD2 Code

U1309 code for other Fiat cars