2019 Toyota Tacoma Blind Spot Monitor DTC C1AC1 or C1AC2


Some 2019 model year Tacoma vehicles may exhibit a Blind Spot Monitor System warning message with any of the following Diagnostic Trouble Codes (DTCs) present.

C1AC1 – Master Module Horizontal Axis Misalignment
C1AC2 – Slave Module Horizontal Axis Misalignment

Follow the Repair Procedure in bulletin T-SB-0001-20 to address this condition.

The fix is to Replace Blind Spot Monitor (Both Sides) with updated part numbers 88162-04015 (Sensor, Blind Spot Monitor)

This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.