DTC Set Conditions

• Engine coolant temperature is less than about 212°F (100°C) when the engine is started.
• Intake air temperature is less than 140°F (60°C) when the engine is started.
• Vehicle is operating under the closed loop air/fuel ratio control.
• Engine coolant temperature is more than 171°F (77°C).
• Volume Air Flow (VAF) sensor output frequency is 88 Hz or more.

Judgement criteria is when long-term fuel trim has continued to be more than 12.5 percent for 5 seconds or short-term fuel trim has continued to be more than +10.0 percent for 5 seconds.

• Engine coolant temperature is less than about 212°F (100°C) when the engine is started.
• Intake air temperature is less than 140°F (60°C) when the engine is started.
• Vehicle is operating under the closed loop air/fuel ratio control.
• Engine coolant temperature is more than 171°F (77°C).
• VAF sensor output frequency is 88 Hz or less.

Judgement criteria is when long-term fuel trim has continued to be more than 12.5 percent for 5 seconds or short-term fuel trim has continued to be more than 15 percent for 5 seconds.

• Engine coolant temperature is more than about 212°F (100°C) when the engine is started.
• Intake air temperature is more than 140°F (60°C) when the engine is started.
• Vehicle is operating under the closed loop air/fuel ratio control.
• Engine coolant temperature is more than 171°F (77°C).
• VAF sensor output frequency is 88 Hz or more.

Judgement criteria is when long-term fuel trim has continued to be more than 12.5 percent for 5 seconds or short-term fuel trim has continued to be more than 20.0 percent for 5 seconds.

• Engine coolant temperature is more than about 212°F (100°C) when the engine is started.
• Intake air temperature is more than 140°F (60°C) when the engine is started.
• Vehicle is operating under the closed loop air/fuel ratio control.
• Engine coolant temperature is more than 171°F (77°C).
• VAF sensor output frequency is 88 Hz or less.

Judgement criteria is when long-term fuel trim has continued to be more than 12.5 percent for 5 seconds or short-term fuel trim has continued to be more than 25.0 percent for 5 seconds.

• Engine coolant temperature is more than 171°F (77°C).
• Vehicle is operating under the closed loop air/fuel ratio control.

Judgement criteria is when long-term fuel trim has continued to be 12.5 percent for 5 seconds or short-term fuel trim has continued to be 25.0 percent for 5 seconds.