Description:

This diagnostic trouble code indicates an open circuit in the air throttle actuator, characterized by unusually high resistance. An open circuit can disrupt the actuator’s function, affecting its ability to control the air intake effectively.

Reaction:

The ECU may disable the throttle actuator, leading to default air control settings that could affect engine performance and emissions.

Recommendations:

• Inspect Actuator Wiring and Connections: Check for broken wires, loose connectors, or corrosion that might cause an open circuit.
• Measure Resistance Levels: Use a multimeter to confirm the resistance measurements. High resistance levels indicate an open circuit.
• Repair or Replace Faulty Wiring: Address any defects found in the circuitry by repairing or replacing wires or connectors.
• Reset ECU and Re-test Actuator: Once repairs are made, reset the ECU to ensure all changes are recognized and test the actuator under various operational scenarios to confirm functionality.

Note:

Maintaining the electrical integrity of the air throttle actuator circuit is essential for reliable engine operation. Routine checks can help prevent issues that lead to operational inefficiencies.