[SOLVED] P16A1 Code: Fixing Throttle Position Sensor High Voltage Communication Circuit

The automobile fault code P16A1 indicates a problem with the Throttle Body Assembly. The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The cause of this fault code can be a faulty Throttle Body Assembly, an open or shorted harness, a poor electrical connection in the Throttle Body Assembly circuit, or a faulty Engine Control Module (ECM).

To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0. It is important to address this fault code promptly to prevent further damage to the vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p16a1 fault code.

  • The symptoms of the automobile fault code p16a1 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p16a1 can be caused by a faulty throttle body assembly, open or shorted throttle body assembly harness, poor electrical connection in the throttle body assembly circuit, or a faulty engine control module (ECM).

  • The fault code P16A1 can be caused by a faulty Throttle Body Assembly, an open or shorted Throttle Body Assembly harness, a poor electrical connection in the Throttle Body Assembly circuit, or a faulty Engine Control Module (ECM).

INNOVA 5210
Get an OBD Scanner for accurate, Your car-specific Error Diagnosis
  • Pinpoints your car-specific issues, giving accurate diagnostics for your exact make and model.
  • Works anywhere, even with limited connectivity, making it highly versatile.
  • Provides detailed insights into real-time performance for your exact make and model, beyond generic online explanations.
  • Tracks past issues of your vehicle, helping you spot recurring problems and monitor long-term performance, which online resources can’t offer.
  • Detects potential issues early, helping avoid costly repairs instead of just addressing current problems.
  • Regular checks support efficiency and emissions standards, potentially increasing resale value—hard to gauge with online info alone.
Buying through our links may earn us commission.

To fix the p16a1 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p16a1, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p16a1 are the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P16A1 fault code refers to a problem with the throttle position sensor communication circuit.

The throttle body assembly contains a throttle position sensor that provides a signal voltage based on the angle of the throttle blade. This information is transmitted between the throttle body and the Engine Control Module (ECM) on the signalserial data circuit.

However, if the ECM detects a high voltage circuit condition on the throttle position sensor signal circuit for more than 1 second, it will set the P16A1 code. This means that there is a communication issue between the throttle body and the ECM, specifically related to a high voltage circuit. It’s important to note that the throttle position sensor is not serviceable and is mounted within the throttle body assembly.

This fault code indicates a problem with the communication between the throttle position sensor and the ECM, which may require further diagnosis and repair.

What are the possible causes of the automobile fault code P16A1?

If you’re seeing the fault code P16A1 and your engine light is on, it could be due to a few possible causes. One culprit could be a faulty throttle body assembly. Another possibility is that the throttle body assembly harness is open or shorted, or there may be a poor electrical connection in the throttle body assembly circuit. Lastly, a faulty engine control module (ECM) could also be to blame. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the P16A1 fault code?

If you’re dealing with the P16A1 fault code and your engine light is on, it’s time to take action. The culprit could be a faulty Throttle Body Assembly or issues with the wiring harness and connectors. To fix it, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or corroded pins. This simple step could be the key to resolving the issue and getting your engine running smoothly again. Don’t delay, check it out now!

What should I look for when checking for damaged components and connector pins to resolve the P16A1 fault code?

When resolving the P16A1 fault code, start by checking for damaged components and connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded connector pins. By doing so, you can identify any issues that may be causing the fault code and take the necessary steps to fix them.

p16a1 error fault code explained

If your engine light is on, it could be due to a faulty Throttle Body Assembly or issues with the wiring harness and connectors. To fix it, visually inspect the wiring and connectors for any damage. Look out for broken, bent, pushed out, or corroded pins on the connectors.

Scroll to Top