P0297
Fix within a few daysYour vehicle's computer detected that the vehicle speed exceeded a programmed maximum limit.
Code P0297 means your vehicle exceeded its programmed top speed. Common causes: Driver overspeed (60%), faulty vehicle speed sensor (30%). Drivability: Yes, safe to drive if no other symptoms. Repair cost: $0-$200 DIY, $100-$400 professional.
Can I Drive With P0297?
Yes, safe to drive
No restrictions, unless your speedometer is erratic or not working, in which case limit driving to essential trips under 10 miles and avoid highways.
Stop driving immediately if: Speedometer is completely dead, transmission is shifting erratically or harshly, or other warning lights (like ABS) are on.
Symptoms of P0297
- 1Check Engine Light is on
- 2Vehicle may enter 'limp mode' (reduced power)
- 3Speedometer may read erratically or incorrectly (if VSS is faulty)
- 4Cruise control may not work
- 5Vehicle may feel sluggish or have reduced top speed
Common Causes of P0297
Parts most likely causing this code, ranked by probability
The vehicle was driven at a speed exceeding its electronically programmed top speed limit.
60% of P0297 cases are due to the vehicle actually exceeding its speed limit
A faulty vehicle speed sensor sends an incorrect, excessively high speed signal to the Powertrain Control Module (PCM).
30% of P0297 cases are fixed by replacing the Vehicle Speed Sensor
Damaged wiring or a loose connection to the Vehicle Speed Sensor can cause intermittent or falsely high speed signals.
8% of P0297 cases are fixed by repairing wiring or connectors
The PCM itself has an internal fault, misinterpreting the vehicle speed sensor signal.
2% of P0297 cases are fixed by replacing the PCM
Check These First (Before Buying Parts)
- Review your recent driving habits to see if you exceeded the vehicle's top speed.
- Check for any other related diagnostic trouble codes (DTCs) using an OBD-II scanner.
- Verify your speedometer's accuracy by comparing it to a GPS speed reading.
How to Diagnose P0297
- 1Check your driving history to see if you recently exceeded high speeds.
- 2Use an OBD-II scanner to check for any other related codes, especially P0500, P0501, P0502, P0503.
- 3Monitor live data with a scan tool to compare the reported vehicle speed to the actual speed.
- 4Visually inspect the Vehicle Speed Sensor (VSS) and its wiring harness for any signs of damage, corrosion, or loose connections.
- 5Test the VSS output signal if possible, following your vehicle's service manual.
P0297 on Popular Vehicles
Toyota Camry
2007-2024The Vehicle Speed Sensor (VSS) on many Camry models is located on the transmission. Access is usually straightforward.
30% fixed by replacing the Vehicle Speed Sensor
Honda Accord
2003-2024Similar to the Camry, the VSS on Honda Accords is typically found on the transmission. Check for wiring integrity, as these connections can sometimes corrode.
30% fixed by replacing the Vehicle Speed Sensor
Ford F-150
2004-2024On Ford F-150s, the VSS location can vary. Older models might have it on the rear differential, while newer ones often integrate it into the transmission output shaft speed sensor. Confirm the exact location for your year and transmission.
30% fixed by replacing the Vehicle Speed Sensor
Frequently Asked Questions
What does P0297 mean?
P0297 indicates that your vehicle's engine control module detected that the vehicle's speed surpassed a pre-programmed maximum limit.
Can I drive with P0297?
Yes, safe to drive, but understand why the code set. If your speedometer is erratic or not working, limit driving to essential trips and avoid highways until you diagnose the issue.
Will P0297 clear itself?
No, P0297 will not clear itself. The Check Engine Light will remain on until the underlying issue is resolved and the code is manually cleared with an OBD-II scanner, or after several drive cycles if the fault is no longer detected.
How do I fix P0297 myself?
First, consider if you recently drove at very high speeds. If not, check for other related codes. Inspect the Vehicle Speed Sensor (VSS) and its wiring for damage. If the VSS is faulty, replacing it is a common DIY fix.
How much does it cost to fix P0297?
If it's just driver overspeed, the DIY cost is $0. If a Vehicle Speed Sensor needs replacement, DIY costs are $50-$200 for the part. Professional repair, including diagnosis and VSS replacement, typically costs $100-$400.
P0297 keeps coming back - why?
If P0297 keeps returning, it means the underlying issue is not resolved. This could be a persistent VSS fault, an intermittent wiring problem, or a rare PCM issue. Ensure you've thoroughly checked the VSS and its circuit.
Will P0297 fail emissions/smog test?
Yes, a P0297 code will cause your vehicle to fail an emissions or smog test. Any active Check Engine Light indicates a fault in the emissions system or related components, preventing a pass.
What's the difference between P0297 and P0500?
P0297 specifically indicates an 'over speed' condition, meaning the PCM detected the vehicle exceeding its maximum speed limit. P0500 indicates a general 'malfunction' of the Vehicle Speed Sensor circuit, meaning the sensor is not sending a plausible signal at all, regardless of actual speed.
P0297 on Ford F-150?
On a Ford F-150, P0297 often points to either the driver exceeding the electronically limited top speed or a faulty Vehicle Speed Sensor. The VSS on F-150s is typically located on the transmission tail shaft or the rear differential, depending on the year and transmission type.
Questions to Ask Your Mechanic
Did you confirm the actual speed the vehicle was traveling when the P0297 code was set?
Good answer: Yes, I checked the freeze frame data and compared it to the vehicle's known speed limiter. I also monitored live data to ensure the VSS is reporting accurately.
What are the live data readings for the vehicle speed sensor (VSS) at various speeds?
Good answer: I monitored the VSS signal with the scan tool. It shows a consistent and accurate speed reading, increasing and decreasing smoothly with vehicle movement, and it does not show any spikes or drops that would indicate a faulty sensor or wiring.
Repair Cost Estimate
DIY Repair
Parts only
$0-$200
Shop Repair
Parts + labor
$100-$400
Save $100-$200 by doing it yourself
Difficulty
beginner
Time
0.5-2 hours
Beginner-friendly
Cost of Waiting
If the P0297 code is caused by a faulty Vehicle Speed Sensor (VSS), ignoring it can lead to incorrect speedometer readings, erratic transmission shifting, and malfunctions in systems like ABS and traction control. This creates unsafe driving conditions and can potentially cause premature wear on transmission components due to improper shifting.
Tools You'll Need
- OBD-II Scan Tool
- Basic hand tools (ratchet, sockets, wrenches)
- Multimeter (for testing wiring, optional)
P0297 is often a straightforward code to address. It's frequently triggered by driver action or a relatively simple sensor replacement, and your vehicle will return to normal operation afterward.
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Your Next Steps
Step 1: Use an OBD-II scanner to check for any other codes and review freeze frame data to see the conditions when P0297 was set.
Step 2: If no other codes are present and you did not exceed the vehicle's top speed, visually inspect the Vehicle Speed Sensor (VSS) and its wiring for damage or loose connections.
Step 3: If the VSS or its wiring appears faulty, consider replacing the VSS. Parts you'll likely need: a new Vehicle Speed Sensor.