Generic SAE-standard code: same meaning on every make.
66A
Specific fault index within the subsystem.
Frequently asked questions about U066A
What does U066A mean?
Lost Communication With EGR Sensor E. The control module stopped receiving expected network messages from the EGR Sensor E node on the vehicle communication bus.
Is U066A generic or manufacturer-specific?
U066A is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U066A 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 U066A is removable in your case.
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