TransmissionGeneric OBD-II codeUrgency: Garage soon
Code P0500: vehicle speed sensor (VSS) fault
P0500 means: vehicle speed sensor "A" malfunction.[1][2] The ECU is not receiving the signal from the vehicle speed sensor (VSS), or is receiving an incorrect one. That signal is a basic piece of data for the car: it is used by the speedometer, by the automatic gearbox to decide when to change gear, by cruise control and, depending on the car, by the ABS and stability control.[1][3][4][5]
What code P0500 means
The ECU is not receiving the signal from the vehicle speed sensor (VSS), or is receiving an incorrect one. That signal is a basic piece of data for the car: it is used by the speedometer, by the automatic gearbox to decide when to change gear, by cruise control and, depending on the car, by the ABS and stability control.[1][3][4][5]
On older cars (without a CAN bus) the signal usually comes from a sensor mounted on the gearbox. On modern ones, the ABS wheel speed sensors and the network link between the ABS control unit and the engine ECU are also involved, so an ABS fault can trigger this code. Autodoc Club adds that the ECU usually detects it above about 25 km/h, when it expects a speed signal and does not receive one.[1][3]
It is a generic OBD-II code (it starts with P0), so it means the same on any make; Autodoc Club warns that the diagnosis may vary slightly from one manufacturer to another.[1][6]
Original definition (SAE J2012): Vehicle Speed Sensor "A" Malfunction[1][2]
Codes from the same family
They indicate the same problem in a specific cylinder, bank or sensor. Causes, symptoms and diagnosis are those on this page.
Causes of P0500 and its family
From most to least likely, according to the sources.
- 1Faulty vehicle speed sensor (VSS): this is the most common cause, especially on older cars without a CAN bus.[1][3][5]
- 2Damaged or severed wiring, a loose or corroded connector, or a poor sensor earth.[1][2][3][5]
- 3On modern cars: failure of the ABS wheel speed sensors, of the ABS control unit or of the network link with the engine ECU.[1][3]
- 4Dirty, damaged or worn sensor ring or toothed wheel, or drive gear, in the gearbox, differential or axle.[1][2][3][5]
- 5Faulty engine ECU (ECU/PCM), an uncommon case.[1][5]
Symptoms
- Speedometer that reads zero, fluctuates or gives wrong values; the odometer may stop counting.[1][3][4][5]
- Automatic gearbox that shifts harshly, erratically or late, or that stays in one gear.[1][3][4][5]
- Cruise control that does not engage or that cuts out while driving.[1][3][5]
- ABS and traction control lights on, or ABS that does not work properly.[1][2][3]ABS/ESP light: faults that cause it
- Engine warning light on.[2][5]Engine warning light: faults that cause it
- Unstable idle or with revs higher than normal.[1]Vibrations: faults that cause it
- Increased fuel consumption from incorrect engine management.[1]Uses more fuel: faults that cause it
How to diagnose P0500
In order: from the most likely and cheapest to check to the most expensive.
- 1Read the code with a diagnostic tool and also check the other control units (ABS, gearbox, CAN bus). On modern cars, fix the ABS, wheel speed or communication codes first, because they are usually the source.[3]
- 2Check the wiring and connector of the speed sensor: look for oil, corrosion, damaged wires or loose connectors; clean the connectors with contact cleaner spray and reconnect them properly.[1][3]
- 3Check the sensor's earth connections and clean or replace corroded earth points.[1]
- 4Check the ABS wheel speed sensors: on modern cars they act as a backup for the speed sensor.[1]
- 5On cars with the sensor on the gearbox, use a multimeter to check that it generates a signal (on older ones, alternating voltage when the driveshaft turns) and check that the sensor ring and the drive gear are not dirty, damaged or worn.[1][3][5]
- 6Replace the sensor or repair the wiring only when the tests justify it. Then clear the code and do a road test to confirm that it does not return.[1][2]
- 7If the other components are fine, check the engine ECU.[5]
Can I keep driving with P0500?
Garage soon
The sources agree that it is best to repair it soon, with some nuances. Autodoc Club allows short distances but does not recommend it, because the fault affects safety systems such as the ABS and can cause gear-shifting problems. Samsara calls it "moderately serious": you can drive, but the speedometer and cruise control may fail and the gearbox or engine may be affected. Carista gives it medium severity.[1][3][5]
Documented faults related to P0500
Known faults of specific engines and cars, with their repair cost, the affected years and their sources.
Engine sensors: the most serious faults by engine and car
- High severityFrequency: Occasional2.0 DTI and 2.2 DTIVP44 injection pump and air mass meter failureGerman Wikipedia documents recurring failures of the Bosch VP44 injection pump and the air mass meter in the early years of this engine. An owner testimony for this engine describes the pump being replaced at 192,500 km, at a cost the owner calls «prohibitive».
- Medium severityFrequency: Common2.0 TDIClogged particulate filter or faulty pressure sensorThe 2.0 TDI's particulate filter clogs if the car mostly makes short journeys, because it never gets to regenerate; sometimes the fault is just the differential pressure sensor. Cleaning it costs around €200 and replacing it, €800 to €3,000.Repair (garage): €800–€3,000
- Medium severityFrequency: Common1.4 and 1.6 8vCrankshaft position sensor failure (TDC sensor)The crankshaft position sensor (capteur PMH, or TDC sensor) appears repeatedly in the reliability sources for the Clio II, the Kangoo I and the Dacia Logan I with this engine, with hard cold starting or stalling as the main symptoms. It is a cheap part, but the failure can leave you stranded.
- Medium severityFrequency: Common1.4 and 1.6 16vCrankshaft position sensor failureThe crankshaft position sensor (capteur PMH) appears repeatedly in the reliability sources for almost every generation with this engine, with hard cold starting, stalling or the car cutting out unexpectedly. It is a cheap part, but the failure can leave you stranded.
ABS and stability control (ESP): the most serious faults by engine and car
- Critical severityFrequency: Very frequentHyundai Tucson IIIFire risk from the ABS control module (HECU)Yes. Hyundai recalled the Tucson TL built between February 2017 and August 2020 (campaign 11DC03) because the ABS module can fail internally and cause a short circuit with a risk of fire in the engine bay, even with the car parked. In the US the same campaign (20V543000) covered model years 2016-2021.
- Critical severityFrequency: Very frequentKia Sportage IVShort circuit in the ABS/ESP unit with fire riskYes: Germany's KBA and the US NHTSA have recorded several campaigns (2021 and 2025) over a short circuit in the ABS/ESP unit that can cause a fire in the engine bay, even with the car parked and switched off.
- Critical severityFrequency: Very frequentOpel Corsa FBrake fluid leak and loss of ABS/ESP from the EBS valve block (2024 production)The manufacturer recalled Opel Corsa F cars built between 24 May and 27 August 2024 because of an EBS valve block with a casting defect that can cause an internal brake fluid leak and the loss of stability control, ABS and electronic brake distribution.
- Critical severityFrequency: Very frequentPeugeot 2008 IIReduced braking effectiveness from an HBC electronic fault (2023 production)On Peugeot 2008 II models built between 2 October and 15 November 2023, an error in the vacuum circuit can make the electronic unit send an invalid value to the hydraulic brake compensation (HBC), which reduces braking effectiveness.
Automatic gearbox (torque converter and CVT): the most serious faults by engine and car
- Critical severityFrequency: CommonMultitronicWear of the variator chain and conesYes: the variator uses a chain of more than 1,000 links between two pairs of cones that wears with mileage, especially if the oil is not changed regularly. Gebrauchtwagenberater ties the gearbox's reputation to "numerous total failures"; Schaeffler/LuK sells a kit to repair the chain.
- Critical severityFrequency: Common2.0 CDI (OM640)Costly failure of the Autotronic (CVT) automatic gearboxYes: the Autotronic continuously variable gearbox, optional on the 180 CDI and 200 CDI, is the problem cited most by owners of the 140 hp version (24 of 114 testimonies) and a fault hotspot according to the ADAC up to 2006. A German source recommends avoiding it and choosing the manual gearbox.
- High severityFrequency: CommonMultitronicControl unit (TCU) failure and limp modeYes: the multitronic control unit, especially in the 01J code (up to 2007), is one of its best-documented weak points. Overheating with oil seeping into the control unit causes fault warnings and limp mode and, if ignored, can end up damaging the gearbox itself.
- High severityFrequency: Common7G-Tronic / 9G-TronicConductor plate and speed sensor failure (limp mode)Yes: one of the most cited weak points of the 7G-Tronic (722.9) is the internal conductor plate, which integrates the turbine, output and intermediate-shaft speed sensors; if it fails it can trigger a limp mode with delayed shifts or harsh jerks, although it does not always require replacing the whole gearbox.
- High severityFrequency: CommonAudi A6 C6Wear and failures of the Multitronic automatic gearbox on front-wheel-drive versionsYes: on front-wheel-drive versions with the Multitronic (CVT) gearbox, gebrauchtwagenberater.de documents jerking when pulling away that can progress to complete failure, especially on older cars; fiches-auto.fr adds selector lock-ups and torque converter breakages. The quattro versions, with the Tiptronic gearbox, do not share this problem.Repair (garage): €1,000Appears at around 120,000 km
- High severityFrequency: CommonMINI Cooper R50Faults in the CVT automatic gearbox, the manual gearbox and the clutchAccording to the reports collected by fiches-auto.fr, the Mini R50 accumulates 22 gearbox mentions and 32 clutch mentions, and the CVT automatic variant is described as fragile and 'to be avoided'. Wikipedia confirms that the CVT and the manual gearboxes were fitted depending on the year.
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.
- 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.
- High severityFrequency: OccasionalM264/M254Poorly tightened 48 V earth wiring in the mild-hybrid system (fire risk)Mercedes-Benz has issued several recalls (2022-2025) because the 12 V and 48 V earth connections of some cars with a 48 V system may be poorly tightened: resistance rises, the connection heats up and a fire cannot be ruled out. The official workshop checks them and repairs them if necessary in an hour or more.
- High severityFrequency: Occasional1.9 TDIUnit injector tappet wear and injector wiring damageOn the unit injector system, the tappets that operate the injectors can wear if the oil is not changed on time, and the injector wiring can be damaged by contact with oil, causing misfires or loss of power.
- 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
Can I drive with code P0500?
You can, but it is best to repair it soon. Autodoc Club admits short distances can be driven although it does not advise it, because the fault can affect the ABS and gear changes; Samsara considers it moderately serious and warns that the speedometer, cruise control and gearbox may work badly; and Carista gives it medium severity.[1][3][5]
Can an ABS fault cause code P0500?
Yes. On modern cars the ABS wheel speed sensors act as a backup for the speed sensor, so a faulty wheel sensor, the ABS control unit or the network link with the engine ECU can trigger the code. That is why Carista advises, on these cars, checking the ABS and communication codes first.[1][3]
Why does the automatic gearbox behave badly with P0500?
Because the automatic gearbox uses the car's speed to decide when to change gear. Without that signal, shifts can become harsh or late, or the gearbox can stay in one gear, according to the sources consulted.[1][3][4][5]
Does code P0500 clear by itself?
Not reliably. Autodoc Club says that, even if it is cleared with the scanner, the code comes back until the cause is corrected, so a proper repair is needed.[1]
Does P0500 mean the same on all makes?
The definition does: it is a generic OBD-II code, and those starting with P0 are the same for all manufacturers. What changes is where the speed signal comes from (a sensor on the gearbox or the ABS wheel sensors) and how it is diagnosed on each model.[1][3][6]
What is the difference between code P0500 and P0501?
P0501 is the same speed sensor "A", but for range or performance: according to TaT, the signal arrives but is erratic, incorrect or out of range, as opposed to a missing signal, and Carista describes it as a speed that does not match the engine speed and the gear engaged; Autodoc Club speaks of an implausible or absent signal. The causes and checks are essentially those of this code. Carista adds, for P0501 only, that tyres or wheels of a different size from the manufacturer's can distort the calculated speed, so it is worth checking that the sizes match.[1][7][8][9]
Will I pass the MOT with code P0500?
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.[11]
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.
- Código de avería P0500 - guía paso a paso para su diagnóstico y resoluciónAutodoc Club · Technical documentation · consulted 2 October 2026 · in Spanish
- OBD Code P0500 - Vehicle Speed Sensor "A" MalfunctionPartsAvatar · Technical documentation · published 13 March 2023 · consulted 2 October 2026
- P0500: OBD-II code P0500 flags a fault in the vehicle speed sensor circuit — the PCM is losing the speed signal used for shifts, cruise control, and the speedometer.Carista · Technical documentation · consulted 2 October 2026
- P0500 - Vehicle Speed Sensor Signal Missing - Sensor 1The Automotive Technician (TaT) · Technical documentation · consulted 2 October 2026
- DTC code P0500: Vehicle Speed Sensor (VSS) MalfunctionSamsara · Technical documentation · consulted 2 October 2026
- On-board diagnosticsWikipedia · Other source · consulted 2 October 2026
- Código de avería P0501Autodoc Club · Technical documentation · consulted 4 October 2026 · in Spanish
- P0501 OBD-II codeCarista · Technical documentation · consulted 4 October 2026
- P0501 - Vehicle Speed Sensor Signal Error - Sensor 1The Automotive Technician (TaT) · Technical documentation · consulted 4 October 2026
- Generic OBDII P Codes P0500-P0599Rick's Free Auto Repair Advice · Other source · consulted 4 October 2026
- 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