Code 25 - Lean Malfunction

There is an open circuit in the oxygen sensor signal (OX), the EBCV is always open and short circuit in EBCV signal.

Trouble Area:

• Oxygen Sensor Circuit
• Oxygen Sensor
• EBCV Circuit
• EBCV
• ECU

Fig 1: Code 25 - Lean Malfunction Schematic

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Code 25 - Lean Malfunction Flow Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002