Detection Condition

WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.

If PCM detects throttle valve opening angle is less than 12.5 percent for 5 seconds after monitoring conditions are met, PCM determines throttle valve is stuck closed.

Monitoring Conditions

Engine coolant temperature is more than 158°F (70°C).
Mass Airflow (MAF) sensor signal is more than 73.4 grams/sec.

If PCM detects throttle valve opening angle is more than 50 percent for 5 seconds after monitoring conditions are met, PCM determines throttle valve is stuck open.

Monitoring Conditions

Engine RPM is more than 500 RPM.
MAF signal is less than 5 grams/sec.

This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction condition during first drive cycle. Freeze Frame Data is available and DTC is stored in PCM memory.