Throttle / Pedal Position Sensor ‘A’ Minimum Stop Performance
Table of contents
P2109 TOYOTA Possible Causes
- Faulty Electronic Throttle Body
- Electronic Throttle Body harness is open or shorted
- Electronic Throttle Body circuit poor electrical connection
How do I fix code P2109 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2109 TOYOTA code
The cost of diagnosing the P2109 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2109 TOYOTA Description
The idling speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is comprised of a throttle actuator, which operates the throttle valve, and a throttle position sensor, which detects the opening amount of the throttle valve. The Engine Control Module (ECM) controls the throttle actuator to adjust the throttle valve opening amount so that the idling speed is maintained at the target idling speed. The Diagnostic Trouble Code (DTC) will set with the manifold absolute pressure sensor normal and atmospheric pressure 85 kPa (638 mmHg) or more (elevation 1400 m (4592 ft.) or less), when the engine coolant temperature is 45°C (113°F) or less at engine start, the engine is warmed up and conditions for ISC learning are met, the ISC learning value is approximately 3 times larger than normal even though the intake manifold pressure when idling is normal (5 trip detection logic).