P2072 — Throttle Actuator Control System - Ice Blockage (Bank 1)
The electronic throttle on bank 1 is jammed by ice — typical at very low ambient temperatures with high humidity, after a short trip that did not warm the throttle housing. The strategy attempts a self-clearing motion before setting the code.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Electronic throttle body
- Throttle position sensor
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Ice formed in throttle body
- Throttle housing coolant warming circuit blocked
Possible symptoms
- Check engine light on
- Reduced throttle response, possible limp mode
- Hesitation or surging
- Idle too high or too low
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.