Monitor Strategy

Related DTCs

P0111: Intake air temperature sensor rationality (After engine stop) P0111: Intake air temperature sensor rationality (After cold engine start)

Required Sensors/Components (Main)

Intake Air Temperature (IAT) sensor

Required Sensors/Components (Sub)

-

Frequency of Operation

Once per driving cycle

Duration

5 hours or more

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All:

Monitor runs whenever following DTCs are not present

None

After engine stop:

Time after engine start

10 seconds or more

Battery voltage

10.5 V or more

ECT sensor circuit

OK

ECT change since engine

Less than 180°C (356° F)

ECT before engine stop

70°C (158°F) or more

Time that MAF is low before engine stop

70 minutes

Accumulated MAF amount before engine stop

3,451 g or more

Key-off duration

30 minutes

After cold engine start:

Key-off duration

5 hours

Time after engine start

10 seconds or more

ECT sensor circuit

OK

ECT

70°C (158°F) or more

Accumulated MAF amount

3,451 g or more

One of the following conditions 1 or 2 is met:

-

1. Duration while engine load is low

120 seconds or more

2. Duration while engine load is high

10 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

After engine stop:

IAT change

Less than 1°C (2°F)

After cold engine start:

IAT change

Less than 1°C (2°F)

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment