What are the common causes of P0297?

A faulty or misread vehicle speed sensor. A faulty transmission control module. Low or dirty transmission fluid. A faulty transmission solenoid. Incorrect tuning that changes shift points.

Read vehicle speed on a scan tool and compare to a GPS or speedometer. Inspect the vehicle speed sensor and its wiring. Check the transmission fluid level and condition. Revert any tuning that changed the transmission parameters. Replace the transmission control module if the speed inputs check out. Clear the code and retest.

P0297

Vehicle Overspeed Condition

System: Injector circuits (P code)
Lamp: Check Engine Light
Category: Powertrain - Fuel/Air Metering

What it means

P0297 means Vehicle Overspeed Condition.

Check these first

A faulty or misread vehicle speed sensor
A faulty transmission control module
Low or dirty transmission fluid
A faulty transmission solenoid
Incorrect tuning that changes shift points

What to do next

Read vehicle speed on a scan tool and compare to a GPS or speedometer
Inspect the vehicle speed sensor and its wiring
Check the transmission fluid level and condition
Revert any tuning that changed the transmission parameters
Replace the transmission control module if the speed inputs check out
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.