B1946 — Climate Control A/C Post Evaporator Sensor Circuit Failure

What it means

B1946 is an OBD-II diagnostic trouble code: Climate Control A/C Post Evaporator Sensor Circuit Failure.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.