Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSSMART KEY SYSTEM (FOR START, EXCEPT HV) - DIAGNOSTICS - INTRODUCTION (3 OF 3)SMART KEY SYSTEM (FOR START FUNCTION, GASOLINE MODEL)DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020]DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020]

2020 Toyota RAV4 XLE, AWD

Diagnostic Trouble Code Chart [10/2019 - 08/2020]

2020 Toyota RAV4 XLE, AWDSECTION Diagnostic Trouble Code Chart [10/2019 - 08/2020]

SMART KEY SYSTEM (FOR START FUNCTION)

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

DTC No.	Detection Item	Link
B2271	Ignition Hold Monitor Malfunction	Refer to DTC B2271: Ignition Hold Monitor Malfunction [11/2018 - ]
B2274	ACC Monitor Malfunction	Refer to DTC B2274: ACC Monitor Malfunction [11/2018 - ]
B2277	Detecting Vehicle Submersion	Refer to DTC B2277: Detecting Vehicle Submersion [11/2018 - ]
B2278	Engine/Power Switch Malfunction	Refer to DTC B2278: Engine/Power Switch Malfunction [11/2018 - ]
B2282	Vehicle Speed Signal Malfunction	Refer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [11/2018 - 08/2020]
B2283	Vehicle Speed Sensor Malfunction	Refer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [11/2018 - 08/2020]
B2284	Brake Signal Malfunction	Refer to DTC B2284: Brake Signal Malfunction [11/2018 - 12/2021]
B2285	Steering Lock Position Signal Circuit Malfunction	Refer to DTC B2285: Steering Lock Position Signal Circuit Malfunction [10/2019 - 12/2021]
B2286	Runnable Signal Malfunction	Refer to DTC B2286: Runnable Signal Malfunction; DTC B228A: Engine Speed Signal Circuit; DTC P0335: Crankshaft Position Sensor Circuit Malfunction (NE Signal) [11/2018 - 08/2020]
B228A	Engine Speed Signal Circuit	Refer to DTC B2286: Runnable Signal Malfunction; DTC B228A: Engine Speed Signal Circuit; DTC P0335: Crankshaft Position Sensor Circuit Malfunction (NE Signal) [11/2018 - 08/2020]
B228B	System Voltage or GND Energization Malfunction	Refer to DTC B228B: System Voltage or GND Energization Malfunction [11/2018 - ]
B2779	Engine Starter Communication Malfunction	Refer to DTC B2779: Engine Starter Communication Malfunction [11/2018 - ]
B2781	Open / Short in Steering Lock ECU	Refer to DTC B2781: Open / Short in Steering Lock ECU [11/2018 - 12/2021]
B2782	Power Source Control ECU Malfunction	Refer to DTC B2782: Power Source Control ECU Malfunction [11/2018 - 12/2021]
B2784	Antenna Coil Open / Short	Refer to DTC B2784: Antenna Coil Open / Short [11/2018 - ]
B2788	IG2 Signal Malfunction	Refer to DTC B2788: IG2 Signal Malfunction [11/2018 - 12/2021]
B278A	Short to GND in Immobiliser System Power Source Circuit	Refer to DTC B278A: Short to GND in Immobiliser System Power Source Circuit [11/2018 - ]
B278D	Malfunction of ID-BOX Recognition	Refer to DTC B278D: Malfunction of ID-BOX Recognition [11/2018 - ]
B2790	ID BOX EEPROM Malfunction	Refer to DTC B2790: ID BOX EEPROM Malfunction [11/2018 - 08/2020]
B2799-86	Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid	Refer to DTC B2799-86: Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid [11/2018 - 08/2020]
B279A-12	Engine Immobiliser System Circuit Short to Battery	Refer to DTC B279A-12: Engine Immobiliser System Circuit Short to Battery [11/2018 - 08/2020]
B279C-95	Engine Immobiliser System Incorrect Assembly	Refer to DTC B279C-95: Engine Immobiliser System Incorrect Assembly [11/2018 - ]
B27A5	Open in Front Floor Electrical Key Oscillator Circuit	Refer to DTC B27A5: Open in Front Floor Electrical Key Oscillator Circuit [11/2018 - ]
B27A6	Open in Rear Floor Electrical Key Oscillator Circuit	Refer to DTC B27A6: Open in Rear Floor Electrical Key Oscillator Circuit [11/2018 - ]
B27A7	Open in Inside Luggage Compartment Electrical Key Oscillator Circuit	Refer to DTC B27A7: Open in Inside Luggage Compartment Electrical Key Oscillator Circuit [11/2018 - ]
P0335	Crankshaft Position Sensor Circuit Malfunction (NE Signal)	Refer to DTC B2286: Runnable Signal Malfunction; DTC B228A: Engine Speed Signal Circuit; DTC P0335: Crankshaft Position Sensor Circuit Malfunction (NE Signal) [11/2018 - 08/2020]
U0100	Lost Communication with ECM / PCM	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U0140	Lost Communication with Body Control Module	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U0142	Lost Communication with Main Body ECU	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U0155	Lost Communication with Combination Meter	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U0230	Lost Communication with Rear Gate Module	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U1103	Lost Communication with Stop and Start Control Module	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]
U1117	Lost Communication with Accessory Gateway	Refer to DTC U0100: Lost Communication with ECM / PCM; DTC U0140: Lost Communication with Body Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0230: Lost Communication with Rear Gate Module; DTC U1103: Lost Communication with Stop and Start Control Module; DTC U1117: Lost Communication with Accessory Gateway [11/2018 - ]