Description:

This diagnostic trouble code indicates that the air throttle actuator has not been properly calibrated, which could lead to inaccurate control over the engine’s air intake system, affecting performance and emissions.

Reaction:

The ECU might enter a default mode to manage throttle control, which could limit engine performance or increase emissions until the actuator is correctly calibrated.

Recommendations:

• Perform Calibration: Follow the specific steps outlined in the CTM to recalibrate the air throttle actuator according to the manufacturer’s specifications.
• Check Actuator Functionality: Ensure the actuator is mechanically capable of completing its full range of motion.
• Inspect Wiring and Connections: Verify that all electrical connections are secure and intact to support proper calibration procedures.
• Reset ECU and Re-Test: After calibration, reset the ECU to clear any stored codes and test the actuator across its full operational range to ensure proper function.

Note:

Proper calibration of the air throttle actuator is crucial for ensuring the engine operates efficiently and within environmental regulations. Calibration should be checked regularly as part of routine maintenance.