B2798 Toyota Auto Trouble Code
Parts or components should not be replaced with reference to only a B2798 Toyota DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
Evaporative emissions systems test for a leak in the fuel tank and associated hoses. To perform the test, the computer pulls a vacuum and checks to see if the vacuum holds. Each car maker uses a different techniques to check, but most often it's some type of fuel tank pressure sensor.
B2798 Toyota Possible Solution:
Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.
B2798 Toyota Description For All Models :
- Toyota 1000
- Toyota 105
- Toyota 1600
- Toyota 2000
- Toyota 4500
- Toyota 4runner
- Toyota 700
- Toyota Aa
- Toyota Allion
- Toyota Alphard
- Toyota Altezza
- Toyota Aristo
- Toyota Aurion
- Toyota Auris
- Toyota Avallon
- Toyota Avalon
- Toyota Avalon Ii
- Toyota Avanza
- Toyota Avensis
- Toyota Aygo
- Toyota Bandeirante
- Toyota Bb
- Toyota Blade
- Toyota Blizzard
- Toyota Brevis
- Toyota Caldina
- Toyota Cami
- Toyota Camry
- Toyota Carina
- Toyota Caserta
- Toyota Celica
- Toyota Celsior
- Toyota Century
- Toyota Chaser
- Toyota Coaster
- Toyota Condor
- Toyota Conquest
- Toyota Corolla
- Toyota Corona
- Toyota Corsa
- Toyota Cressida
- Toyota Cresta
- Toyota Crown
- Toyota Curren
- Toyota Cynos
- Toyota Denso
- Toyota Dyna
- Toyota Echo
- Toyota Es
- Toyota Es3
- Toyota Estima
- Toyota Etios
- Toyota F-1
- Toyota Fchv
- Toyota Fj
- Toyota Fj Cruiser
- Toyota Fk
- Toyota Fortuner
- Toyota Fxs
- Toyota Gaia
- Toyota Gt1
- Toyota Gt86
- Toyota Hi-ace
- Toyota Highlander
- Toyota Hilux
- Toyota Hilux Viii
- Toyota Hmv
- Toyota Ipsum
- Toyota Iq
- Toyota Isis
- Toyota Ist
- Toyota Kluger
- Toyota Land Cruiser
- Toyota Lexcen
- Toyota Lite-ace
- Toyota Mark Ii
- Toyota Mark X
- Toyota Master
- Toyota Matrix
- Toyota Mega
- Toyota Mega Cruiser
- Toyota Model F
- Toyota Mr2
- Toyota Mr2 Spyder
- Toyota Mrj
- Toyota Mr-s
- Toyota Noah
- Toyota Opa
- Toyota Paseo
- Toyota Passo
- Toyota Picnic
- Toyota Platz
- Toyota Pod
- Toyota Porte
- Toyota Premio
- Toyota Previa
- Toyota Prius
- Toyota Prius 2
- Toyota Prius 3
- Toyota Prius 4
- Toyota Proace
- Toyota Progres
- Toyota Progress
- Toyota Pronard
- Toyota Publica
- Toyota Quantum
- Toyota Ractis
- Toyota Raum
- Toyota Rav4
- Toyota Retro Cruiser
- Toyota Rs
- Toyota Rsc
- Toyota Rt
- Toyota Runx
- Toyota Sa
- Toyota Sequoia
- Toyota Sera
- Toyota Sienna
- Toyota Soarer
- Toyota Solara
- Toyota Soluna
- Toyota Space
- Toyota Sparky
- Toyota Sport
- Toyota Sports
- Toyota Sprinter
- Toyota Stallion
- Toyota Starlet
- Toyota Super
- Toyota Supra
- Toyota Tacoma
- Toyota Tazz
- Toyota Tercel
- Toyota Trd
- Toyota Tundra
- Toyota Vanguard
- Toyota Venture
- Toyota Venza
- Toyota Verossa
- Toyota Vista
- Toyota Vitz
- Toyota Will
- Toyota Windom
- Toyota Wish
- Toyota Xyr
- Toyota Yaris
B2798 Toyota Trouble Repair :
If your vehicle failed a B2798 Toyota test and the B2798 Toyota Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.
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