OtherGeneric OBD-II codeUrgency: Garage soon
Code P2299: brake and accelerator pedals incompatible
P2299 means: brake pedal position and accelerator pedal position incompatible.[1][2][3] The control unit continuously compares the accelerator pedal position with the brake pedal position (or the brake switch) as a safety check. The code is stored when the two appear to be pressed together in a way that does not correspond to normal driving, which suggests that one of the two signals is wrong.[2][4]
What code P2299 means
The control unit continuously compares the accelerator pedal position with the brake pedal position (or the brake switch) as a safety check. The code is stored when the two appear to be pressed together in a way that does not correspond to normal driving, which suggests that one of the two signals is wrong.[2][4]
On cars with electronic throttle, the control unit usually reduces the throttle opening or switches to an emergency idle. PartsAvatar adds that, if the fault disappears on its own, the engine returns to normal operation.[2][4]
It is a generic code of the OBD-II standard (it starts with P2), with the same definition on any brand; the specific diagnostic steps depend on the car.[2][5]
Original definition (SAE J2012): Brake Pedal Position/Accelerator Pedal Position Incompatible[1][2][3]
Causes of P2299
From most to least likely, according to the sources.
- 1The driver presses the brake and the accelerator at the same time, for example by driving with one foot on each pedal or resting the foot on the brake.[4]
- 2Brake pedal switch or position sensor stuck or faulty.[4][6]
- 3Accelerator pedal position sensor faulty, or stuck in the open-throttle position.[4][6]
- 4Intermittent fault in one of the sensors.[4]
- 5Damaged wiring or connectors between the sensors and the control unit.[6]
- 6Mechanical problems in the pedal mechanism.[6]
- 7Faulty control unit, according to CarWiki.[6]
Symptoms
- Engine fault warning light on.[4][6]Engine warning light: faults that cause it
- Poor throttle response: the control unit may limit how far the throttle opens.[2][4]Less power: faults that cause it
- Fault mode or emergency idle on cars with electronic throttle.[2][4]Limp mode: faults that cause it
- Irregular or jerky acceleration.[6]Jerking: faults that cause it
- Unstable idle.[6]
- Difficult starting, according to CarWiki.[6]Hard to start: faults that cause it
How to diagnose P2299
In order: from the most likely and cheapest to check to the most expensive.
- 1Scan the car and note all the codes and the freeze frame data.[4]
- 2Clear the code and carry out a road test to see whether it returns.[4]
- 3In the live data, check that the control unit sees the brake pedal as released and the accelerator pedal with the throttle closed.[4]
- 4If both sensors give normal readings, ask the driver whether they drive with one foot on both pedals.[4]
- 5Check the wiring and connectors of the brake switch and the accelerator pedal sensor, and check that the pedal mechanism moves freely.[6]
- 6Clean or replace the faulty sensor (brake switch or accelerator sensor) and, if necessary, reprogram the control unit.[4][6]
Can I keep driving with P2299?
Garage soon
AutoDTCs rates it as moderate severity: it should be fixed soon, but it does not normally leave the car stranded. TaT and PartsAvatar describe the control unit limiting the throttle opening or switching to emergency idle, so the car may respond poorly to the accelerator; it is therefore worth checking as soon as possible.[1][2][4]
Documented faults related to P2299
Known faults of specific engines and cars, with their repair cost, the affected years and their sources.
Accelerator pedal: the most serious faults by engine and car
- High severityFrequency: Rare1.0 VVT-i2010 recall for the accelerator pedalIn January 2010 Toyota recalled, as part of a worldwide campaign, the Aygo, Peugeot 107 and Citroën C1 built between February 2005 and August 2009 because of an accelerator pedal that could stay partly depressed or return slowly to idle.
- Critical severityFrequency: OccasionalMercedes-Benz GLE V167Accelerator pedal mounting plate that bends and releases the pedalThe plate that holds the accelerator pedal module can bend and release the pedal from the body; the pedal can then stay pressed down, prevent kickdown or obstruct the brake pedal. It affected 882 GLE models built between 3 and 17 May 2023.
- High severityFrequency: OccasionalMaserati Ghibli IIIDriver's floor mat that can trap the accelerator pedal on the 2013–2015 GhibliYes. A May 2016 alert, notified by Spain, covers 2013 to 2015 Ghibli cars: the driver's side floor mat can shift and trap the accelerator pedal, with a risk of accident.
Wiring, connectors and short circuits: the most serious faults by engine and car
- Critical severityFrequency: OccasionalBMW N62 / N63Additional turbo coolant pump with a risk of short circuit and fireIn 2011 BMW recalled 5, 6 and 7 Series, X5 and X6 models built between 2007 and 2011 because of the additional turbo coolant pump: moisture, a short circuit and, in extreme cases, a fire. In 2012 there was another campaign for a crack in the pump, with a more robust version.
- Critical severityFrequency: Occasional1.6 GDi híbrido (Kappa)Main relay of the power relay assembly (overheating and fire risk)Yes, on the first units: Hyundai and Kia recalled 2016–2018 Ioniq and Niro hybrids and plug-in hybrids because the main relay that connects the high-voltage battery could come loose, overheat and, in the worst case, cause a fire.
- Critical severityFrequency: Occasional1.6 GDi híbrido (Kappa)Clutch hydraulic actuator (HCA): leak or moisture with risk of short circuit and fireYes, this is the most documented hybrid system fault: the hydraulic actuator that engages the combustion engine with the hybrid assembly has had two recalls (2018 for a leak on the Niro and 2025 for moisture in its electronic board on the Niro, Ceed and XCeed PHEV), with a risk of short circuit and fire.
- High severityFrequency: Occasional1.3 TCeBlown fuel pump fuseOn the Renault Captur II and Clio V with the 1.3 TCe engine, a 20-amp fuse can blow and leave the car without an engine. According to L'argus, in April 2021 this fault still had no factory fix; the official service centre's diagnosis includes checking, and sometimes replacing, the catalytic converter.
- Critical severityFrequency: CommonRover 75Seat SRS connector fault with airbag and seatbelt warning light onAuto Express warns that the Rover 75's seat SRS connector can cause the airbags to fail, and dealers were fixing it with revised connectors. The Dutch APK inspection puts the airbag or seatbelt fault warning among the most frequent defects across almost all series.
- Critical severityFrequency: OccasionalAlfa Romeo GiuliettaShort circuit from badly routed wiring that can prevent gear shifting (KBA campaign, 2010-2015)Yes: according to Germany's KBA, on Alfa Romeo Giulietta cars built between 2010 and 2015 inadequate cable routing could cause a short circuit and, as a result, gear-shift failure.
Frequently asked questions
Why does P2299 appear if I am not pressing both pedals at the same time?
Because what counts is what the control unit reads: a stuck brake switch, an accelerator sensor showing open throttle or an intermittent fault can make it believe that both are pressed. PartsAvatar mentions both possibilities and recommends first ruling out that the driver is resting a foot on both pedals.[4]
Can I keep driving with P2299?
AutoDTCs says it normally does not leave the car stranded, but TaT and PartsAvatar describe the control unit limiting the accelerator or switching to emergency idle. If the car responds poorly to the pedal, the prudent course is to take it to a workshop as soon as possible.[1][2][4]
Does the accelerator pedal need replacing?
Not first. PartsAvatar and CarWiki advise checking the live readings of both pedals, the driver's habits, the wiring and the pedal mechanism beforehand, and replacing only the sensor that is shown to be faulty.[4][6]
Will I pass the MOT with code P2299?
If the code has switched on the engine warning light, no: with that light on, the inspection records a serious defect, and on Euro 5 and Euro 6 cars the ITV (Spain's roadworthiness inspection, similar to the MOT) also reads the OBD diagnostic system. Repair the fault before you go; clearing the code just before the inspection does not help either, because it counts as a serious defect.[7]
Not sure what is wrong with your car? Describe what you notice in the symptom diagnosis or see all fault codes.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- P2299 – Brake Pedal Position / Accelerator Pedal Position Incompatible — AutoDTCsAutoDTCs · Technical documentation · consulted 31 October 2026
- P2299 Fault Code Definition & Info | TaTThe Automotive Technician (TaT) · Technical documentation · consulted 31 October 2026
- p2299 Generic DTC: Brake Pedal Position/Accelerator Pedal Position IncompatibleDTCSearch.com (OBD Solutions) · Technical documentation · consulted 31 October 2026
- Error Code P2299: What It Means & What To Do?PartsAvatar · Technical documentation · published 2 June 2022 · consulted 31 October 2026
- On-board diagnosticsWikipedia · Other source · consulted 31 October 2026
- OBD DTC Fehlercode P2299 | Bremspedalposition (BPP) Schalter / Gaspedalposition (APP) Sensor – Signale unverträglichCarWiki.de · Technical documentation · consulted 31 October 2026 · in German
- Desmontando mitos: ¿puede pasar mi coche la ITV con el testigo de «avería motor» encendido?Diariomotor · Motoring press · published 8 March 2021 · consulted 2 October 2026 · in Spanish