P2299 on 2015-2017 Jeep Patriot: Brake and Accelerator Pedal Conflict Explained

What's Unique About the 2015-2017 Jeep PATRIOT

For the Jeep Patriot and its platform-mates (Jeep Compass, Dodge Caliber), Jeep has been very direct about this code. The manufacturer issued Technical Service Bulletins (TSBs) to dealerships explicitly stating that P2299 is 'usually caused by a two footed driver and accelerator pedal should not be replaced for this fault.' This strong guidance is meant to stop owners and technicians from performing expensive and unnecessary repairs when the solution is often a simple change in driving habits. While other Jeep models like the Grand Cherokee received software updates to address over-sensitivity for this code, the Patriot's primary fix remains behavioral or correcting pedal obstructions.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light is on
• Electronic Throttle Control (ETC) light (lightning bolt symbol) may be illuminated.
• Reduced engine power or vehicle is in 'limp mode'.
• Cruise control will not engage or is disabled.
• Poor or unresponsive throttle.
🎬 See how to diagnose a bad throttle body in limp mode.

Most Likely Causes

1. Two-Footed Driving Style 🔴 High Probability This is a software-monitored condition, not a hardware flaw. The vehicle's Brake-Throttle Override safety system is functioning as designed. Many drivers are unaware they rest their left foot on the brake pedal, causing a constant 'brake applied' signal that conflicts with acceleration.
   How to confirm: Interview the driver. Ask if they rest their left foot on the brake pedal while driving or use two feet to operate the pedals. Clear the code and test drive using only the right foot for both pedals. Many owners in forums report this was the cause after initially suspecting a part failure.
   Typical fix: Change driving habits to use only the right foot for both the accelerator and brake pedals. This is a behavioral fix and requires no parts.
   Est. part cost: $0
2. Pedal Obstruction 🟡 Medium Probability Thick or improperly placed aftermarket floor mats can bunch up behind or under the pedals, preventing them from returning to the rest position. This can cause either the brake pedal sensor to think it's pressed or the accelerator pedal to not return to idle.
   How to confirm: Visually inspect the driver's footwell. Check if the floor mat is pushed up against the pedal arms or if any other object (e.g., a misplaced water bottle) is interfering with pedal travel.
   Typical fix: Reposition, secure, or replace the floor mat. Remove any objects obstructing the pedals.
   Est. part cost: $0

Rare But Worth Checking

• Faulty Brake Light Switch (Brake Pedal Position Sensor): The switch can fail or stick in the 'on' position, telling the PCM the brake is applied even when it's not. This would cause the brake lights to stay on and trigger P2299 when you press the accelerator. This is the most likely component to fail if a part is actually the cause.
• Wiring or Connector Issue: Corrosion or damage in the wiring for either the brake or accelerator pedal sensors can cause erratic signals, leading to the P2299 code. The TSBs recommend checking wiring before replacing any parts. A poor ground connection is a possible culprit.
🎬 Watch: How to repair a common ground wire bundle issue.
• Faulty Accelerator Pedal Position (APP) Sensor: While extremely rare for this specific code on this vehicle, a failing APP sensor could theoretically send an incorrect signal. However, Jeep TSBs strongly advise against replacing the accelerator pedal for P2299 alone, as it is almost never the root cause. This would typically be accompanied by other APP-specific codes.

Diagnosis Steps

1. Ask the driver about their driving habits (one foot vs. two feet). This is the most common cause, confirmed by multiple TSBs and owner experiences.
2. Inspect the driver's side footwell for any obstructions, especially an incorrectly placed or bunched-up floor mat that could interfere with the pedals.
3. Check if the brake lights are stuck on. If they are, this points towards a faulty or misadjusted brake light switch.
4. If the cause is not obvious, use an OBD-II scanner to view the live data for the Accelerator Pedal Position (APP) sensor and the Brake Pedal Position (BPP) sensor status.
5. With the key on and engine off, check that the APP sensor reads 0% and the BPP sensor reads 'Off' or 'Released' when the pedals are not being touched.
6. Press each pedal individually and watch the live data to ensure the values change smoothly and return to their resting state when released.
7. If the BPP sensor shows 'On' or 'Pressed' when the pedal is not touched, inspect the brake light switch, its connector, and wiring.
8. If all sensors and wiring appear to function correctly, the cause is confirmed to be the incompatible pedal application (two-footed driving). Clear the code and perform a test drive using one-footed driving to confirm the fix.

Parts You'll Likely Need

• No parts typically required — The most common cause is driver habit, which requires no parts to fix. The second most common cause is an obstructed pedal, which also requires no parts.
  OEM price range: $0
  Aftermarket price range: $0
• Brake Light Switch / Stop Lamp Switch (OEM #56054001AD) — In the rare event that the brake pedal position sensor is faulty and stuck in the 'on' position, it would need to be replaced. This is an uncommon cause for this code.
  Trusted brands: Mopar, Standard Motor Products
  OEM price range: $25-$45
  Aftermarket price range: $15-$30

Related Codes That Often Appear With This One

• P2122 — This code for 'Accelerator Pedal Position Sensor 1 Circuit Low' can be set if the pedal connector is disconnected during a faulty diagnostic attempt for P2299.
• P2127 — This code for 'Accelerator Pedal Position Sensor 2 Circuit Low' can also be set if the pedal connector is disconnected during diagnosis, as warned in TSB #9003413.

Technical Service Bulletins (TSBs) & Recalls

• 9003413: States P2299 is usually caused by a two-footed driver and the accelerator pedal should not be replaced.
• 53034160A: Repeats the warning that P2299 is typically caused by a two-footed driver and to follow diagnostic procedures before replacing the accelerator pedal.
• TSB 18-027-15 REV. A: For some 2012-2013 Fiat 500 models, a PCM reflash was issued to address P2299, showing it can be a software sensitivity issue on other FCA platforms.

Platform-Specific Known Issues

• Jeep issued Technical Service Bulletin (TSB) #9003413, which is very clear: 'DTC P2299 is usually caused by a two footed driver and accelerator pedal should not be replaced for this fault.'
• A similar TSB, #53034160A, reinforces this, advising technicians to check wiring and follow diagnostic procedures before considering pedal replacement for any related codes.
• Unlike some other FCA vehicles (Jeep Grand Cherokee, Dodge Durango), there does not appear to be a widely available software update (reflash) specifically for the Patriot to reduce the sensitivity of the P2299 logic.

Mechanic-Grade Diagnostic Values

• Accelerator Pedal Position Sensor 1 (APP1) Signal Voltage — expected: Fluctuates between ~0V (released) and ~5.0V (fully depressed).. Failure: No voltage, voltage that doesn't change with pedal movement, or erratic readings.
• Accelerator Pedal Position Sensor 2 (APP2) Signal Voltage — expected: Fluctuates between ~0V (released) and ~2.5V (fully depressed). The two sensors (APP1 and APP2) should move proportionately.. Failure: No voltage, voltage that doesn't change with pedal movement, or readings that don't correlate with APP1.
• APP Sensor Harness Connector 5-Volt Supply — expected: Approximately 5 volts DC with the ignition key on.. Failure: No voltage or significantly low voltage, indicating a wiring or PCM issue upstream of the sensor.
• Brake Light Switch Continuity (Brake Lights Circuit) — expected: With the switch plunger out (pedal pressed), there should be continuity (near 0 ohms). With the plunger in (pedal released), the circuit should be open (infinite resistance).. Failure: Continuity when pedal is released, or an open circuit when pedal is pressed.

Scan Tool Commands That Help

• OBD-II Scanner with Live Data: View Live Data for BPP (Brake Pedal Position) Switch — To confirm if the PCM is seeing a 'Brake Applied' or 'Brake Not Applied' signal. This is the first step to check for a stuck brake light switch without physically accessing it. The status should change from 'Not Activated' to 'Activated' when the pedal is pressed.

Wiring & Ground Locations

• PCM Connector C1 - APP Signals — At the Powertrain Control Module (PCM).. Pin 92 is for APP Signal 1 (Circuit K23, BR/WT wire) and Pin 91 is for APP Signal 2 (Circuit K29, WT/BR wire). These are the primary inputs the PCM uses to determine throttle demand and can be tested here for signal integrity.
• PCM Connector C1 - Brake Signals — At the Powertrain Control Module (PCM).. Pin 41 is Brake Signal 1 (Circuit B15, DG/WT wire) and Pin 17 is Brake Signal 2 (Circuit B16, LB/DG wire). The PCM uses these inputs to know when the brake is applied. A fault on these circuits can cause P2299.
• Main Chassis Ground Bundle — On the passenger side frame rail, down next to the alternator.. A known issue on Patriots is the corrosion of this main ground wire bundle at the frame crimp. A poor ground here can cause numerous, seemingly unrelated electrical issues, including flickering brake lights or incorrect sensor readings that could potentially contribute to a P2299 code.
• G305 — Located in the left kick panel area.. This is an interior ground point. Since the brake and accelerator pedal assemblies are located inside the cabin, this ground could be part of their circuits. A loose or corroded G305 could cause erratic sensor behavior.

Real Owner Repair Stories

• YouTube user 'Pittsburgh Pap' (2012 Jeep Patriot) — Handbrake dash light was flickering and then stayed on constantly, followed by the passenger side headlight going out.
  ❌ Tried (didn't work) Replacing the headlight bulb multiple times.
  ✅ What actually fixed it The root cause was a corroded main ground wire bundle where it attaches to the passenger side frame rail next to the alternator. The fix was to cut the corroded crimp off, separate the bundle of wires, strip them, and re-terminate them with new ring terminals bolted securely to the cleaned frame location.

OEM Part Supersession History

• 56054001AA, 56054001AB, 56054001AC → 56054001AD — Part has been revised and updated by the manufacturer over time.
  Heads up: The current part, 56054001AD, replaces the previous versions for the 2009-2017 model year range.

Model Year Variations Within This Range

• 2009-2017: While the brake light switch part number may have had different versions for earlier model years, for the 2015-2017 range, the part appears consistent. The Mopar part 56054001AD is listed for the entire 2009-2017 range.