OBD-II Generic Error Code P2299: How to Fix It

Q: Can I drive my car with a P2299 code?

You can often drive short distances with P2299 active, but it is not recommended. The vehicle may enter reduced engine power mode, limiting acceleration and potentially making highway driving unsafe. Because the code involves both brake and throttle systems, it presents a potential safety risk, especially if the accelerator pedal sensor is behaving erratically. Get the vehicle diagnosed as soon as possible.

Q: What is the most common cause of code P2299?

The most common cause of P2299 is a faulty or misaligned brake pedal position switch. This switch can wear out, shift out of position, or develop intermittent electrical faults that make the ECM think the brake is being pressed when it is not — or that both pedals are pressed simultaneously. The accelerator pedal position sensor and related wiring issues are the second most common cause.

Q: How much does it cost to fix a P2299 code?

If the fix is a brake pedal switch replacement, parts typically cost between $10 and $50 and labor is often under one hour, making total repair costs around $75 to $200 at a shop. If the accelerator pedal assembly needs replacement, parts can range from $50 to $250 depending on the vehicle, with labor adding $100 to $200 more. ECM reprogramming at a dealership can cost $100 to $300 separately.

Q: Will P2299 clear itself after the problem is fixed?

No — P2299 will not automatically disappear from your scanner history once the underlying problem is resolved. You need to manually clear it using an OBD-II scanner. After clearing, the code will not return if the repair was successful. If it comes back after a short drive, the root cause has not yet been fully addressed.

Q: Can a bad brake light switch really cause P2299?

Yes, absolutely. The brake light switch (also called the brake pedal position switch) sends a signal to the ECM every time you press the brake. If it fails in the closed position — meaning it constantly tells the ECM the brake is pressed — the ECM sees a conflict whenever you also press the accelerator. This is one of the most straightforward and inexpensive fixes for P2299, and it should always be the first component you test.

Abstract

Error code P2299 means your vehicle's engine control module (ECM) has detected a conflict between the brake pedal position sensor and the accelerator pedal position sensor — specifically, both appear to be pressed simultaneously or their signals don't make logical sense together. This can trigger reduced engine power mode, rough idling, or hesitation during acceleration to protect the drivetrain. Left unaddressed, it may cause unsafe driving conditions and continued drivability issues.