TSBs

Toyota Fuel Cap Fix

Feb. 14, 2022

Some 2008-2011 Toyota Highlander HV vehicles may exhibit a warning light with diagnostic trouble code (DTC) P1423 or fuel cap-binding during removal or installation.

Information courtesy of Mitchell 1

Mike Mavrigian

Some 2008-2011 Toyota Highlander HV vehicles may exhibit a warning light with diagnostic trouble code (DTC) P1423 or fuel cap-binding during removal or installation.

Check the fuel cap condition. If difficult to operate, inspect the fuel neck for overlapping threads. If the threads overlap, replace the cap with part number (P/N) 77300-50030. If the threads do not overlap, replace the cap with P/N 77300-48010. The fuel caps have been redesigned to eliminate the problem. After the repair is complete, perform the automatic Evaporative Emission Control (EVAP) system check to confirm that there are no pending DTCs and the system is normal.

Example of non-overlapping threads.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.