How do I fix code P0073 on a Ford?
If you're experiencing the P0073 error code on your Ford vehicle, it indicates an issue with the intake air temperature (IAT) sensor. This sensor is responsible for monitoring the temperature of the air entering the engine, and a problem with it can lead to various drivability issues. In this article, we'll provide a detailed guide on how to diagnose and fix the P0073 code on your Ford.
What is Code P0073?
The P0073 code is a diagnostic trouble code that is set when the engine control module (ECM) detects a problem with the intake air temperature (IAT) sensor. The IAT sensor is responsible for providing the ECM with information about the temperature of the air entering the engine, which is used to optimize the air-fuel mixture and other engine parameters.
When the ECM detects that the IAT sensor is reporting a voltage that is outside of the normal operating range, it will set the P0073 code. This can be caused by a variety of issues, including a faulty IAT sensor, wiring problems, or issues with the ECM itself.
Diagnosing the P0073 Code
To diagnose the P0073 code, you'll need to follow these steps:
- Use an OBD-II scanner to read the diagnostic trouble code and confirm that the P0073 code is present.
- Visually inspect the IAT sensor and its wiring for any signs of damage or corrosion.
- Use a multimeter to test the IAT sensor for proper resistance and voltage output.
- Check the wiring harness for any breaks, shorts, or other issues that could be causing the problem.
- If the IAT sensor and wiring check out, the issue may be with the ECM itself, which would require further diagnosis and potentially replacement.
Once you've identified the root cause of the P0073 code, you can proceed with the necessary repairs to fix the issue.
Fixing the P0073 Code
If the IAT sensor is the source of the problem, you'll need to replace it. This is a relatively straightforward process, but it's important to ensure that the replacement sensor is compatible with your Ford model and year.
If the wiring is the issue, you'll need to repair or replace the affected wiring harness. This may involve splicing in new wiring or replacing the entire harness, depending on the extent of the damage.
If the ECM is the source of the problem, you'll need to have it diagnosed and potentially replaced by a qualified mechanic.
After making the necessary repairs, clear the diagnostic trouble code and test the vehicle to ensure that the P0073 code has been resolved.
