U0642Lost Communication With EVAP System Pressure Sensor/Switch Circuit B
Generic (OBD-II) interpretation in the TuningBot DTC database.
U · NetworkEmissionsOBD2
What U0642 means
U0642
Lost Communication With EVAP System Pressure Sensor/Switch Circuit B
Generic · emissions
Data confidence65%
The control module stopped receiving expected network messages from the EVAP System Pressure Sensor/Switch Circuit B node on the vehicle communication bus.
Generic SAE-standard code: same meaning on every make.
642
Specific fault index within the subsystem.
Frequently asked questions about U0642
What does U0642 mean?
Lost Communication With EVAP System Pressure Sensor/Switch Circuit B. The control module stopped receiving expected network messages from the EVAP System Pressure Sensor/Switch Circuit B node on the vehicle communication bus.
Is U0642 generic or manufacturer-specific?
U0642 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U0642 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U0642 is removable in your case.
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