Is U0126 specific to the Toyota Tacoma?

The definition here is taken from 2014 Toyota Tacoma factory diagnostic data. The same code may appear on other Toyota models, but the affected module and exact criteria can differ between platforms.

Can I clear U0126 without fixing it?

You can clear it, but if the underlying fault is still present the Tacoma will reset the code on the next drive cycle that runs the relevant monitor. Diagnose the cause first.

Will a generic OBD-II reader show U0126?

Often not — U-codes are manufacturer-specific and usually require a scan tool with Toyota-enhanced coverage such as a Techstream-class tool.

U0126 Toyota Tacoma – Lost Communication with Steering Angle Sensor Module

U0073 Control Module Communication Bus OFF
U0100 Lost Communication with ECM / PCM
U0101 Lost Communication with TCM
U0103 Lost Communication with Gear Shift Module "A"
U0104 Lost Communication with Driving Support ECU
U0110 Lost Communication with Drive Motor Control Module "A"
U0114 Lost Communication with 4WD Control ECU
U011B Lost Communication with Rocker Arm Control Module "A"

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