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DTC/P0501

P0501: Vehicle Speed Sensor "A" Range/Performance

Quick Answer
Moderata GravitàNon sicuro da guidareImpianto elettrico

P0501 means the vehicle speed sensor signal is present but does not fall within the range the ECU expects, or it does not correlate with other inputs such as the ABS wheel speed sensors or engine load. On most modern vehicles the speed signal comes from the ABS wheel speed sensors and is shared over CAN, so this code is often a wiring or ABS sensor issue rather than a dedicated transmission sensor fault.

Costo di riparazione stimatoDa €60 a €650+, varia in base al veicolo

Cosa significa P0501?

P0501 means the vehicle speed sensor signal is present but does not fall within the range the ECU expects, or it does not correlate with other inputs such as the ABS wheel speed sensors or engine load. On most modern vehicles the speed signal comes from the ABS wheel speed sensors and is shared over CAN, so this code is often a wiring or ABS sensor issue rather than a dedicated transmission sensor fault.

P0501 è un codice diagnostico di guasto relativo a impianto elettrico, classificato con gravità moderate. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0501 e accende la spia motore.

Quali sono i sintomi di P0501?

Se il tuo veicolo ha attivato P0501, potresti notare uno o più di questi sintomi:

  • Speedometer reads erratically or drops out at speed
  • ABS and traction control warning lights on
  • Cruise control disables or refuses to set
  • Automatic transmission shifts at the wrong RPM
  • Check engine light on

Cosa causa P0501?

Ecco le cause più comuni di P0501, ordinate in base alla probabilità che siano la causa del problema:

altaFaulty ABS wheel speed sensor (often used as the primary speed input)
mediaDamaged or chafed wiring near the wheel arch or subframe
bassaDamaged reluctor ring on the wheel hub or driveshaft
bassaABS module communication fault

È sicuro guidare con P0501?

No, risolvi subito il problema. The ECU is seeing a vehicle speed signal but it is implausible or inconsistent with other inputs. ABS, traction control, cruise control, and automatic transmission shift logic may be degraded. Drive cautiously to a workshop.

Come si diagnostica P0501?

Segui questi passaggi per individuare la causa principale di P0501:

  1. Read all stored codes. P0501 frequently appears with ABS-specific wheel speed codes (C-codes) that point directly to the affected wheel
  2. Use a scan tool to monitor live data for each wheel speed sensor while driving slowly in a safe area. The faulty wheel will read zero, intermittent, or noisy values
  3. Inspect the suspect wheel speed sensor connector for water ingress, corrosion, and pin tension. Wiggle the harness while watching live data to catch intermittent breaks
  4. Remove the suspect sensor and inspect the tip for metallic debris from the bearing and the reluctor ring for missing teeth or rust scaling
  5. If all four wheel signals look healthy, check the CAN wiring between the ABS module and the ECU and scan the ABS module for internal faults

Quanto costa riparare P0501?

I costi di riparazione di P0501 variano a seconda della causa principale e del tuo veicolo. Ecco le stime tipiche:

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Repair wheel speed sensor wiring €10–€50 €50–€150 €60–€200 Moderata
Replace ABS wheel speed sensor €30–€120 €40–€100 €70–€220 Moderata
Replace reluctor ring or wheel bearing assembly €80–€250 €150–€400 €230–€650 Professionale

Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.

P0501 su veicoli specifici

P0501 si comporta in modo diverso a seconda del tuo veicolo. Seleziona la tua auto qui sotto per cause specifiche del modello, problemi noti e stime dei costi adeguate:

BMW

P0501 su BMW 3 Series

2005-2024

E90 and F30 3 Series commonly trigger P0501 from a failing rear ABS wheel speed sensor at around 120,000 km. The sensor tip collects iron debris from the rear bearing and starts producing a noisy signal. Replacing the sensor is straightforward but BMW often recommends inspecting the bearing at the same time.

Cosa causa P0501 su una BMW 3 Series?

BMW 3 SeriesRear ABS wheel speed sensor failure at high mileage on E90/F30
BMW 3 SeriesRear bearing wear contaminating the sensor tip

Costo di riparazione di P0501 per BMW 3 Series

Costi stimati per i proprietari di BMW 3 Seriesadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici BMW

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Repair wheel speed sensor wiring €14–€70 €70–€210 €84–€280 Moderata
Replace ABS wheel speed sensor €42–€168 €56–€140 €98–€308 Moderata
Replace reluctor ring or wheel bearing assembly €112–€350 €210–€560 €322–€910 Professionale

Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.

Volkswagen

P0501 su Volkswagen Golf

2003-2024

Mk5 and Mk6 Golf are notorious for rear ABS sensor wiring chafing where the harness runs along the trailing arm into the wheel arch. The insulation rubs through over time and the signal cuts out on bumps. VW updated the routing on later builds.

Cosa causa P0501 su una Volkswagen Golf?

Volkswagen GolfRear ABS sensor wiring chafing near wheel arch on Mk5/Mk6
Volkswagen GolfFront sensor connector corrosion from winter road salt

Costo di riparazione di P0501 per Volkswagen Golf

Costi stimati per i proprietari di Volkswagen Golfadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici Volkswagen

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Repair wheel speed sensor wiring €12–€57 €57–€173 €69–€230 Moderata
Replace ABS wheel speed sensor €35–€138 €46–€115 €81–€253 Moderata
Replace reluctor ring or wheel bearing assembly €92–€288 €173–€460 €265–€747 Professionale

Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.

Ford

P0501 su Ford Focus

2005-2022

Mk2 and Mk3 Focus are well known for ABS reluctor ring corrosion in UK and northern EU climates. Road salt scales the toothed ring inside the wheel bearing and the signal becomes erratic. Replacement requires a new bearing on most variants since the ring is integrated.

Cosa causa P0501 su una Ford Focus?

Ford FocusABS reluctor ring rust on Mk2 and Mk3 in salt climates
Ford FocusFront wheel bearing magnetic ring failure

Costo di riparazione di P0501 per Ford Focus

Costi stimati per i proprietari di Ford Focusadeguato al ribasso rispetto alla media a causa dei prezzi dei ricambi specifici Ford

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Repair wheel speed sensor wiring €9–€45 €45–€135 €54–€180 Moderata
Replace ABS wheel speed sensor €27–€108 €36–€90 €63–€198 Moderata
Replace reluctor ring or wheel bearing assembly €72–€225 €135–€360 €207–€585 Professionale

Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.

Opel

P0501 su Opel Astra

2009-2021

Astra J commonly triggers P0501 from front wheel speed sensor failure. The sensor and connector sit low on the strut and water ingress through the connector seal is the typical entry point. Cleaning the connector and applying dielectric grease often delays the failure but a replacement is the proper fix.

Cosa causa P0501 su una Opel Astra?

Opel AstraFront wheel speed sensor water ingress on Astra J
Opel AstraRear sensor connector corrosion on torsion beam axle

Costo di riparazione di P0501 per Opel Astra

Costi stimati per i proprietari di Opel Astraadeguato al ribasso rispetto alla media a causa dei prezzi dei ricambi specifici Opel

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Repair wheel speed sensor wiring €9–€43 €43–€128 €51–€170 Moderata
Replace ABS wheel speed sensor €26–€102 €34–€85 €60–€187 Moderata
Replace reluctor ring or wheel bearing assembly €68–€213 €128–€340 €196–€553 Professionale

Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.

Questi codici compaiono spesso insieme a P0501 o indicano problemi correlati:

P0500P0502P0503P0720C0035

Domande frequenti su P0501

Why does my speedometer drop out at random?

A damaged wheel speed sensor or a chafed sensor wire near the wheel arch is the typical cause. The signal cuts out as the suspension moves, the ECU loses speed input briefly, and the speedometer falls to zero or jumps before recovering.

Is P0501 the same as an ABS fault?

They share the same root cause on most modern cars. The ECU reads vehicle speed from the ABS module over CAN, so a single bad wheel speed sensor can trigger ABS warning lights and a P0501 engine code at the same time.

Can I pass a roadworthiness inspection with P0501?

No. ABS warning lights and a non-working speedometer are automatic fails on TUV, ITV, MOT, TA, and SKP inspections across the EU. Fix the code before booking the test.

Will new tyres of the wrong size cause P0501?

Yes, sometimes. A significant change in rolling diameter, or mixing tyre sizes side to side, can produce wheel speeds that disagree with each other or with the gearbox output, which the ECU may flag as P0501.

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