P1712 High Vehicle Speed Observed in Park

How to Diagnose and Solve P1712 High Vehicle Speed Observed in Park Issues

As a car enthusiast, there’s nothing more satisfying than rolling up your sleeves and getting your hands dirty to fix a car problem. Today, we’re going to tackle the P1712 High Vehicle Speed Observed in Park issue. This is a common problem that can cause your vehicle to behave erratically or even stall. But don’t worry, with a little bit of knowledge and some elbow grease, you can diagnose and solve this issue yourself.

Understanding the P1712 Code

The P1712 code is a diagnostic trouble code (DTC) that indicates a problem with the vehicle’s speed sensor circuit. This code is triggered when the vehicle’s computer detects an unusually high vehicle speed while the car is in park. This can lead to a variety of issues, including poor fuel economy, rough idling, and even engine stalling.

What Causes the P1712 Code?

There are several potential causes for the P1712 code. These can include a faulty vehicle speed sensor, damaged wiring or connectors, or a malfunctioning powertrain control module (PCM).

Diagnosing the P1712 Code

Before you can fix the P1712 code, you need to diagnose the problem. Here’s a step-by-step guide on how to do it:

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Step 1: Check the Vehicle Speed Sensor

The vehicle speed sensor is responsible for monitoring the speed of your vehicle. If it’s faulty, it could be sending incorrect signals to the PCM, triggering the P1712 code. Use a multimeter to check the sensor’s resistance and voltage. If the readings are outside the manufacturer’s specifications, the sensor is likely faulty and needs to be replaced.

Step 2: Inspect the Wiring and Connectors

Damaged wiring or connectors can also cause the P1712 code. Inspect the wiring and connectors for any signs of damage, such as fraying, corrosion, or loose connections. If you find any issues, repair or replace the damaged parts.

Step 3: Test the PCM

If the vehicle speed sensor and wiring are in good condition, the problem could be with the PCM. A malfunctioning PCM can send incorrect signals, causing the P1712 code. You’ll need a professional-grade scan tool to test the PCM. If it’s faulty, it will need to be replaced.

Solving the P1712 Code

Once you’ve diagnosed the problem, it’s time to fix it. Here’s how:

Step 1: Replace the Vehicle Speed Sensor

If the vehicle speed sensor is faulty, replace it with a new one. Make sure to follow the manufacturer’s instructions for installation.

Step 2: Repair or Replace Damaged Wiring or Connectors

If you found damaged wiring or connectors, repair or replace them. Ensure all connections are secure and free from corrosion.

Step 3: Replace the PCM

If the PCM is faulty, it will need to be replaced. This is a complex task that should be done by a professional.


Fixing the P1712 High Vehicle Speed Observed in Park issue can be a bit challenging, but with the right tools and a bit of patience, you can do it yourself. Remember, always follow the manufacturer’s instructions and take safety precautions when working on your vehicle.


1. Can I drive my car with the P1712 code?

While it’s possible to drive with the P1712 code, it’s not recommended. The issue can cause poor fuel economy, rough idling, and even engine stalling.

2. How much does it cost to fix the P1712 code?

The cost to fix the P1712 code can vary depending on the cause of the problem. Replacing a vehicle speed sensor can cost between $50 to $200, while replacing the PCM can cost several hundred dollars.

3. Can I fix the P1712 code myself?

Yes, with some basic automotive knowledge and the right tools, you can diagnose and fix the P1712 code yourself. However, if you’re not comfortable working on your vehicle, it’s best to take it to a professional.