P0609
Control Module VSS Output "B" Malfunction
DTC P0609, sometimes indicated as P060900 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing control module vss output "b" malfunction.
The most common cause of this code is a bad ground connection on the transmission. Other causes can include a defective transmission speed sensor, wiring problems, or a bad control module.
If the ground connection is bad, the first step is to clean the area around the connector and try to re-establish a good connection. If that doesn't work, the next step is to replace the ground strap.
If the transmission speed sensor is bad, the sensor will need to be replaced.
If there is a wiring problem, the wiring should be checked and repaired as necessary.
If the control module is bad, it will need to be replaced.
- P0609: Control Module VSS Output B Malfunction
- P0609: Control Module VSS Output "B" Malfunction
- P0609: Control Module VSS Output "B"
- P0609: Engine control module (ECM), VSS output B – malfunction
- P0609 00: Engine control module (ECM), VSS output B - malfunction
- P0609 00: Internal control module of the controller - incorrect voltage Vss "B"
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.