P2299

Brake Pedal Position/Accelerator Pedal Position Incompatible

Throttle & pedal control Generic OBD-II Medium

What it means

P2299 means the ECM sees the brake and accelerator pedal signals in a combination it considers impossible — for example, both applied at once. As a safety measure the engine often drops to reduced power. The usual cause is a faulty or misadjusted brake light switch or an accelerator pedal position sensor sending a false signal.

Medium

Can I keep driving? The car may drop into reduced-power mode when both pedals are read together; it's a safety-related fault, so address it promptly.

Real-world scan data

Seen in

1,030

scans in the past year

Found in

0.2%

of scans

0.3%

of scans that found faults

Appears alongside · share of P2299 scans

P1646in 20.1% of scans

P0704in 15.2% of scans

P0645in 9.2% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Sudden reduced engine power or limp mode
Throttle feels unresponsive or hesitant
Check-engine light on
Cruise control disabled

Common causes

Most likely first

Faulty or misadjusted brake pedal position (brake light) switchLikely
Accelerator pedal position (APP) sensor fault or driftCommon
Wiring or connector fault at the brake switch or pedal sensorCommon
Brake switch signal seen at the same time as throttle inputLess often
Faulty ECM/PCM (rare)Less often

How to diagnose & fix

Work through it in order

Scan live data and watch the brake-switch and APP sensor signals while pressing each pedal.
Check that the brake light switch is correctly adjusted and not sending a signal at rest.
Inspect the brake-switch and APP connectors and wiring for chafing or shorts.
Replace a faulty brake switch or accelerator pedal sensor as identified.
Clear the code and confirm the pedals no longer read as incompatible.

FAQ

Quick answers

Is it safe to drive with P2299?+

Be cautious. The engine can cut to reduced power when it sees the conflict, which is unsafe in traffic. Have it diagnosed before relying on the car.

Can I just clear P2299?+

It will reset the next time the conflicting signals appear. The brake switch or pedal sensor fault must be repaired to keep it off.

Read & clear P2299 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX