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Service bulletins for the 2016 Toyota Avalon

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

281 on file from NHTSA, as of 2026-10-19.

About C1AB2 on the 2016 Toyota Avalon: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: C1AB2 are shown. Show all

Bulletins, newest first
T-SB-0049-162018-07-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TSB: Some 2015 ? 2016 model year Avalon, Camry, Sienna, and Tundra vehicles equipped with Blind Spot Monitor may exhibit a Blind Spot Monitor Warning message with Diagnostic Trouble Code (DTC) C1AB2 Short to Ground in Outer Mirror Indicator (Master) or C1AB3 Short to Ground in Outer Mirror Indicator (Slave) stored. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0049-162018-06-11. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; LANE DEPARTURE: BLIND SPOT DETECTION. TSB: Some 2015 ? 2016 model year Avalon, Camry, Sienna, and Tundra vehicles equipped with Blind Spot Monitor may exhibit a Blind Spot Monitor Warning message with Diagnostic Trouble Code (DTC) C1AB2 Short to Ground in Outer Mirror Indicator (Master) or C1AB3 Short to Ground in Outer Mirror Indicator (Slave) stored. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0049-16 Rev2018-04-23. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. TSB: Some 2015 ? 2016 model year Avalon, Camry, Sienna, and Tundra vehicles equipped with Blind Spot Monitor may exhibit a Blind Spot Monitor Warning message with Diagnostic Trouble Code (DTC) C1AB2 Short to Ground in Outer Mirror Indicator (Master) or C1AB3 Short to Ground in Outer Mirror Indicator (Slave) stored. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0049-162017-04-05. Service bulletin. ELECTRICAL SYSTEM. TSB: SOME 2015 – 2016 MODEL YEAR AVALON, CAMRY, SIENNA, AND TUNDRA VEHICLES EQUIPPED WITH BLIND SPOT MONITOR MAY EXHIBIT A BLIND SPOT MONITOR WARNING MESSAGE WITH DIAGNOSTIC TROUBLE CODE (DTC) C1AB2 SHORT TO GROUND IN OUTER MIRROR INDICATOR (MASTER) OR C1AB3 SHORT TO GROUND IN OUTER MIRROR INDICATOR (SLAVE) STORED. FOLLOW THE REPAIR PROCEDURE IN THIS BULLETIN TO ADDRESS THIS CONDITION.
T-SB-0049-16 REV2017-01-04. Service bulletin. ELECTRICAL SYSTEM. TSB: SOME 2015 – 2016 MODEL YEAR AVALON, CAMRY, SIENNA, AND TUNDRA VEHICLES EQUIPPED WITH BLIND SPOT MONITOR MAY EXHIBIT A BLIND SPOT MONITOR WARNING MESSAGE WITH DIAGNOSTIC TROUBLE CODE (DTC) C1AB2 SHORT TO GROUND IN OUTER MIRROR INDICATOR (MASTER) OR C1AB3 SHORT TO GROUND IN OUTER MIRROR INDICATOR (SLAVE) STORED. FOLLOW THE REPAIR PROCEDURE IN THIS BULLETIN TO ADDRESS THIS CONDITION.
T-SB-0049-16 REV2016-12-14. Service bulletin. EQUIPMENT. TSB: SOME 2015 – 2016 MODEL YEAR AVALON, CAMRY, SIENNA, AND TUNDRA VEHICLES EQUIPPED WITH BLIND SPOT MONITOR MAY EXHIBIT A BLIND SPOT MONITOR WARNING MESSAGE WITH DIAGNOSTIC TROUBLE CODE (DTC) C1AB2 SHORT TO GROUND IN OUTER MIRROR INDICATOR (MASTER) OR C1AB3 SHORT TO GROUND IN OUTER MIRROR INDICATOR (SLAVE) STORED. FOLLOW THE REPAIR PROCEDURE IN THIS BULLETIN TO ADDRESS THIS CONDITION.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.