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OBD-II Code

P2299

Severity

Not yet reviewed

Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.

Can you drive it

We cannot say

Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.

Indicative cost (USD)

$40–$180

From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.

P2299 indicates the PCM is seeing the brake pedal switch report applied at the same moment the accelerator pedal position sensor reports a meaningful throttle request, which the ECU treats as a safety-critical conflict and responds to by cutting throttle to idle until both inputs return to a sane state.

How a shop works this

Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.

  1. Note every code that is set, not just this one.

    Codes that appear together usually narrow the cause faster than any one of them read alone.

  2. Read the freeze frame — the conditions the fault was recorded under.

    Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.

  3. Confirm the fault is current rather than history.

    Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.

  4. Then follow the diagnostic notes further down this page, in the order they are written.

    They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.

If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.

Common symptoms

  • Check engine light
Read the full diagnostic procedureP2299 indicates the PCM is seeing the brake pedal switch report applied at the same moment the accelerator pedal position sensor reports a meaningful…

P2299 indicates the PCM is seeing the brake pedal switch report applied at the same moment the accelerator pedal position sensor reports a meaningful throttle request, which the ECU treats as a safety-critical conflict and responds to by cutting throttle to idle until both inputs return to a sane state. The code is functionally an anti-unintended-acceleration check and it does not mean either sensor is bad, only that the two disagree about driver intent.

Cheapest-first diagnostic

  1. pull freeze frame and confirm the conditions (often a left-foot braker or a driver who rests their foot on the brake pedal), then physically inspect the brake light switch at the pedal bracket for a switch that is misadjusted, has a broken plastic plunger, or is staying partially depressed because the rubber bumper on the pedal arm has fallen out.
  2. Check that brake lights are not stuck on with the engine off.
  3. Caveat: a single failed brake light switch can also trigger cruise-control inoperative and shift-interlock complaints at the same time, so do not chase the APP sensor first when those symptoms are also present.
Vehicle-specific patterns2005-2012 Toyota and Lexus vehicles (Camry, Avalon, ES350, RX350) are the most common, where the brake light switch fails or the rubber pedal stopper…
  • 2005-2012Toyota and Lexus vehicles (Camry, Avalon, ES350, RX350) are the most common, where the brake light switch fails or the rubber pedal stopper deteriorates and falls out, allowing the pedal to rest a few millimeters depressed.
  • 2007-2014GM trucks with throttle-by-wire see the brake switch on the booster bracket fail intermittently.
  • 2008-2013Nissan Altima and Maxima often log P2299 alongside cruise-inoperative complaints from the same switch.
  • 2010-2015Honda Pilot and Odyssey commonly need the brake pedal position switch (a two-piece adjustable assembly) replaced and re-clipped to spec.

Estimated repair$40 to $180.

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