P0297 code meaning
Vehicle Overspeed Condition
What P0297 means
P0297 is a condition code: the engine module detects that road speed – from the vehicle speed sensor or wheel and output shaft speed – exceeded the calibrated maximum. Electronic speed limiters cut fuel or throttle at that limit, and the event is stored. Ford uses the code on its gasoline trucks and stores it without the warning light; no manufacturer publishes a threshold. Common triggers are descending with a trailer beyond the limiter speed, wheelspin on the driven axle, a wrongly programmed tire size or axle ratio, or spikes in the speed signal. Unlike P0219 it concerns road speed, not engine speed.
P0297 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.2 to 1 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0297
- Usually no warning light, code only stored
- Vehicle limits speed at its maximum
- With a disturbed signal: jumping speedometer, odd shifting
Common causes of P0297
- Most likelyLimiter speed genuinely exceeded (downhill, trailer)
- PossibleWrong tire size or axle ratio programmed, larger wheels fitted
- PossibleWheelspin on the driven axle
- Less likelySpeed signal disturbed (loose contact, interference, tone wheel)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Vehicle speed sensorEngine control module
What each part of P0297 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2 | Area: fuel and air metering (injector circuit). |
| 97 | The exact fault in that area. |
What to do next
- Note P0297 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0297
What does P0297 mean?
P0297 means "Vehicle Overspeed Condition". P0297 is a condition code: the engine module detects that road speed – from the vehicle speed sensor or wheel and output shaft speed – exceeded the calibrated maximum. It is a generic code, so it means the same on every make.
Is it safe to drive with P0297?
Drive gently and only to a workshop. With P0297 the car can go into limp mode (reduced power) to protect itself.
Will P0297 fail an emissions test?
P0297 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0297 to fix?
Difficulty: easy. A typical repair takes 0.2 to 1 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0297 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.