P0297 Code: Vehicle Overspeed Condition

The vehicle speed sensor (VSS) is a device that monitors vehicle speed. This magnetic device measures vehicle speed by monitoring the transmission/transaxle output or wheel speed. If the powertrain control module (PCM) detects the vehicle has been driven at a speed that exceeds a calibrated limit, the vehicle’s computer will store a P0297 code on a scan tool.

What Does the P0297 Code Mean?

Diagnostic trouble code P0297 stands for “Vehicle Overspeed Condition.” This is a generic powertrain code that applies to vehicles with OBD-II.

Most vehicles have a speed limiter system that will enact a high-speed fail-safe strategy when the vehicle is driven at speeds that exceed a calibrated limit. The strategy, which is primarily designed to protect the powertrain from damage, will usually disable one or more of the engine’s fuel injectors to slow the vehicle.

The PCM monitors vehicle speed via the VSS, which uses a toothed ring called a reluctor to complete its input circuit to the PCM. The reluctor spins with the transmission output shaft, causing the magnetic field of the VSS to continually change from strong to weak. This creates an alternating current that increases in frequency and amplitude as vehicle speed goes up.

The PCM will register a P0297 code if it receives a signal from the VSS indicating that the vehicle speed has exceeded the maximum limit. This code needs to be addressed right away to prevent further issues.

Note: The definition of code P0297 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0297 Code?

• Vehicle speed exceeded maximum allowable limit
• Excessive wheel slippage from the vehicle being driven on slick surfaces

What are the Common Symptoms of the P0297 Code?

• Illuminated check engine light
• Vehicle temporarily enters a high-speed fail-safe strategy

How to Diagnose the P0297 Code

Make sure to consult your vehicle’s repair manual before attempting to diagnose a DTC P0297. Some diagnostic steps can vary depending on your vehicle’s make and model. What might work to address a P0297 code for a Ford might not work for a Chevy.

However, if you don’t have any auto repair skills and knowledge, it’s best to leave the job to a certified mechanic. They can run the appropriate tests to identify the problems associated with this DTC.

How to Fix the P0297 Code

Don’t expect an easy solution when troubleshooting a P0297 code. You’ll have to do some research regarding your vehicle’s problems and its potential fixes. Good thing there are plenty of OBD-II resources online to help you understand your vehicle’s DTC better. We recommend looking for technical service bulletins on your specific problem to save time. You can also subscribe to ALLDATA to get detailed information on your vehicle.

Fix a P0297 Code With New Parts

A P0297 code is going to trigger your vehicle’s check engine light. While a vehicle with this code might not have any major symptoms, the check engine light is going to continue alerting you about this trouble code. You might not need to replace any parts to fix this code. However, other trouble codes won’t be the same. To clear them, you’ll likely need replacement parts to get your vehicle safely running again. Luckily, getting the right parts to fix different vehicle issues won’t take long, nor will it break the bank here at CarParts.com.

CarParts.com offers a wide selection of components that can fix a triggered P0297 code. These include parts from the engine, exhaust, A/C system, and various other vehicle systems. We only source our products from established brands, so you can be confident that our parts have met stringent quality control standards. We also have distribution centers in strategic locations throughout the US, so you can get new components quickly.

Don’t let faulty components lead to expensive repairs. Browse our selection of high-quality parts today!