Brake and Accelerator Pedal Position Conflict
The P2299 code indicates that the Engine Control Module (ECM) has detected an incompatible relationship between the brake pedal position sensor and the accelerator pedal position sensor. This typically means that both pedals are being pressed simultaneously, or the sensors are sending conflicting signals. The ECM uses this information to control throttle response and fuel delivery; a conflict can cause reduced engine power or unintended acceleration.
01. Most Common Causes
- Faulty brake pedal position sensor
- Faulty accelerator pedal position sensor
- Wiring or connector issues in pedal sensor circuits
- Sticking or misadjusted brake pedal
- ECM software or calibration error
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Unintended acceleration or hesitation
- Cruise control disabled
- Brake lights may stay on or not work properly
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm P2299 and check for other codes.
Step 2: Visually inspect brake and accelerator pedal sensors, wiring, and connectors for damage or corrosion.
Step 3: Test brake pedal position sensor signal with a multimeter; compare to manufacturer specs.
Step 4: Test accelerator pedal position sensor signal; ensure smooth voltage change with pedal movement.
Step 5: Check for sticking brake pedal or misadjusted stop lamp switch.
Step 6: If sensors and wiring are OK, update ECM software or replace ECM if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with P2299 as it can cause reduced engine power or unintended acceleration, posing a safety risk.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement, but could be higher if ECM reprogramming is needed.