Toyota Tacoma Quiz
Multiplex Communication

Diagnostic Trouble Code Chart

In this manual: Multiplex Communication
Introduction — 15Maintenance — 8Audio / Video — 94Garage Door Opener — 7Navigation / Multi Info Display — 84Park Assist / Monitoring — 86Brake — 50Brake Control / Dynamic Control Systems — 165Parking Brake — 52gr-fks Charging — 252gr-fks Cooling — 212gr-fks Emission Control — 132gr-fks Engine Control — 322gr-fks Engine Mechanical — 332gr-fks Exhaust — 92gr-fks Fuel — 422gr-fks Ignition — 62gr-fks Intake — 72gr-fks Lubrication — 152gr-fks Starting — 38Ac60e Automatic Transmission / Transaxle — 146Axle — 19Clutch — 20Cruise Control — 168Differential — 50Drive Shaft — 6Propeller Shaft — 23Rc62f Manual Transmission / Transaxle — 34Suspension — 22Tire And Wheel — 39Vf2cm Transfer — 44Can Communication — 45Multiplex Communication — 20Power Distribution — 5Power Steering — 29Steering Column — 29Air Conditioning — 108Door Lock — 88Engine Hood / Door — 16Engine Immobiliser — 47Exterior — 55Horn — 5Interior — 18Interior Panel — 8Lighting — 93Meter / Gauge / Display — 31Mirror — 22Other System — 24Pre-collision — 40Seat — 52Seat Belt — 40Sliding Roof — 26Supplemental Restraint Systems — 139Theft Deterrent — 20Window / Glass — 53Wiper / Washer — 24
~1min read
DIAGNOSTIC TROUBLE CODE CHART Main Body ECU (Multiplex Network Body ECU)

DTC Code

Detection Item

See page

B1206

P/W Master Switch Communication Stop

B1273

Sliding Roof ECU Communication Stop

B2321

Driver Side Door ECU Communication Stop

B2322

Front Passenger Side Door ECU Communication Stop

B2325

LIN Communication Bus Malfunction
Certification ECU (Smart Key ECU Assembly)

DTC Code

Detection Item

See page

B2785

Communication Malfunction between ECUs Connected by LIN

B2786

No Response from Steering Lock ECU

B278C

Lost Communication with Power Source Control

Test yourself

A quick Toyota Tacoma quiz: every answer comes with an explanation and a link to the manual page.