B3494 Trouble Code

View B3494 obd/2 error code description and symptoms. B3494 engine photo

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 B3494. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for B3494

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

B3494 Error Code Repair Process :

If your vehicle failed a B3494 test and the B3494 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses ecm/tcm serial communication error a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look ecm/tcm serial communication error: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

B3494 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B3494

A common cause of code B3494 is the failure of ECM/TCM Serial Communication Error, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Camshaft advance mechanism binding (VCT unit)
Faulty ignition coil (s)
Damaged VCT phaser

B3494 code for all cars

You can view according B3494 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3494 Volkswagen New Beetle

+B3494 Ford Indigo

+B3494 Mg Rover

+B3494 Chevrolet Half Ton

+B3494 Renault Racoon

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

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