Warning lights inform the driver of malfunctions in the indicated vehicle’s systems.

*1: These lights turn on when the engine switch is turned to the “ON” position (vehicles without a smart key system) or IGNITION ON mode (vehicles with a smart key system) to indicate that a system check is being performed.
They will turn off after the engine is started, or after a few seconds.
There may be a malfunction in a system if a light does not come on, or if the lights do not turn off. Have the vehicle inspected by your Toyota dealer.
*2: If equipped *3: The light flashes to indicate a malfunction.
Warning lights and
indicators
IndicatorsPassenger Airbag ON/OFF Indicator Circuit
Malfunction
DTC B1152/28 Passenger Airbag ON/OFF Indicator Circuit
Malfunction
DESCRIPTION
The passenger airbag ON/OFF indicator circuit consists of the center airbag
sensor assembly and
passenger airbag ON/OFF indicator.
This circuit indicates the operation condition of the front passenger airbag, ...
Oxygen Sensor Circuit Malfunction/ Oxygen Sensor Circuit Low Voltage/ Oxygen
Sensor Circuit High Voltage
DTC P0136 Oxygen Sensor Circuit Malfunction (Bank 1
Sensor 2)
DTC P0137 Oxygen Sensor Circuit Low Voltage (Bank 1
Sensor 2)
DTC P0138 Oxygen Sensor Circuit High Voltage (Bank 1
Sensor 2)
DTC P0156 Oxygen Sensor Circuit Malfunction (Bank 2
Sensor 2)
DTC P0157 Oxygen Sensor Circuit Low Voltage ...
Pressure Control Solenoid "C" Performance (Shift
Solenoid Valve SL3)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory
to detect mechanical
troubles of the shift solenoid valves and valve bo ...