When your vehicle’s onboard diagnostics system detects an issue with the throttle actuator control system, it generates the P2173 code. This code indicates that there is a high airflow detected by the throttle actuator control system, which can lead to performance issues if not addressed promptly.
What Does the P2173 Code Mean?
OBD-II Code P2173 is defined as a Throttle Actuator Control System – High Air Flow Detected. This code is triggered when the Powertrain Control Module (PCM) detects that there is excessive airflow through the engine, which could signal a malfunction in the electronic throttle control system.
What Causes the P2173 Code?
Several issues can lead to the P2173 code being set, including:
- Accelerator Pedal Position (APP) assembly failure
- Leaking vacuum hose
- Dirty or improperly calibrated Mass Airflow (MAF) sensor
- Powertrain Control Module (PCM) failure
- Throttle control motor failure
- Wiring issues
What Are the Symptoms of the P2173 Code?
Drivers may notice the following symptoms:
- Decreased engine performance
- Engine may enter limp home mode, limiting power
- Increased fuel consumption
How Serious Is the P2173 Code?
The P2173 code is considered urgent. It indicates a significant malfunction that can lead to severe damage to the vehicle or pose a risk to the driver and passengers. Immediate attention is necessary to prevent further complications.
How to Diagnose the P2173 Code
Diagnosing the P2173 code involves a systematic approach:
- Use an OBD-II scanner to confirm the P2173 code and check for any related codes.
- Inspect the Accelerator Pedal Position (APP) assembly and associated wiring.
- Examine the vacuum hoses for leaks.
- Check the MAF sensor for cleanliness and proper calibration.
- Inspect the throttle control motor for functionality.
- Evaluate the PCM for any signs of failure.
Common Repairs for the P2173 Code
Common repairs that may be necessary include:
- Replacing the Accelerator Pedal Position (APP) assembly
- Repairing or replacing leaking vacuum hoses
- Cleaning or replacing the Mass Airflow (MAF) sensor
- Replacing the throttle control motor
- Repairing wiring issues in the throttle control circuit
- Replacing the Powertrain Control Module (PCM) if necessary
How Much Does It Cost to Fix the P2173 Code?
The cost to repair the P2173 code can vary significantly based on the underlying issue. Simple repairs like cleaning a MAF sensor may cost around $50-$100, while replacing an APP assembly or PCM could range from $200 to $1,000 or more, depending on the make and model of the vehicle.
Can I Fix the P2173 Code Myself?
If you have experience with automotive repairs and access to the necessary tools, you may be able to address some of the issues that cause the P2173 code yourself. However, for complex issues like PCM failure or wiring problems, it’s advisable to seek professional assistance to ensure a proper diagnosis and repair.
