Fault code P0501 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0501 – Vehicle Speed Sensor Range/Performance

P0501: Causes, signs and repairs

Error code P0501 is displayed and the check engine light is on - what does this mean?

The OBD/EOBD system detects an error in the speed sensor circuit, which reports an implausible or missing signal. This DTC P0501 affects the vehicle speed signal, which is essential for various engine control functions. This error code may have slightly different names for different manufacturers, but always refers to problems with speed detection.

What causes can this error code have?

Defective vehicle speed sensor (VSS)
Damaged or corroded wiring to the speed sensor
Loose or defective plug connections on the VSS
Faulty ABS sensors or wheel speed sensors
Defective engine control unit (ECU)
Interrupted or short-circuited signal lines
Mechanical problems with the gearbox or differential
Defective instrument cluster or speedometer

What symptoms occur in parallel with fault code P0501?

Speedometer failure: The speedometer shows no or incorrect speed values
ABS problems: Anti-lock braking system is not working properly
Shifting problems: Automatic transmission shifts irregularly or jerkily
Cruise control failure: Cruise control system cannot be activated
Idling problems: Engine runs rough when stationary or at low speeds
Increased fuel consumption: Inefficient engine control due to missing speed signal

How to fix the problem of error code P0501?

The repair requires a systematic diagnosis to identify the exact cause.
Replacement of the defective vehicle speed sensor on the transmission or differential after prior diagnosis
Repair or replacement of damaged cable connections between VSS and engine control unit, including insulation
Cleaning and securing all plug connections on the speed sensor with contact spray
Replacement of defective ABS sensors or wheel speed sensors after identification of the faulty sensor
Professional repair or replacement of the engine control unit in the event of internal defects
Complete inspection and repair of the wiring harness between sensors and control units
Mechanical repair of transmission or differential components in the event of mechanical causes

FAQ - Frequently asked questions about DTC P0501

Can I continue driving with error code P0501?

Driving for a short time is possible, but not recommended. Error code P0501 can lead to problems with ABS, cruise control and automatic transmission, which impairs driving safety.

How much does it cost to repair error code P0501?

The costs vary depending on the cause: a new speed sensor costs 50-150 euros, cable repairs 100-300 euros, while replacing the engine control unit can cost 800-2000 euros.

Can error code P0501 be caused by bad weather?

Yes, moisture and corrosion can affect the speed sensor connectors and trigger trouble code P0501, especially in older vehicles.

How is fault code P0501 diagnosed?

Diagnosis is carried out using an OBD scanner, multimeter measurements of the sensor voltages and visual inspection of the wiring. Professional workshops use special diagnostic equipment.

Is fault code P0501 more common in certain vehicles?

Yes, this fault code occurs particularly frequently in older vehicles with high mileage, as the speed sensors are susceptible to wear and tear.

Can I repair fault code P0501 myself?

Simple work such as cleaning plug connections is possible, but the replacement of sensors or cable repairs should be carried out by a specialist workshop.

Vehicles in which error code P0501 occurs most frequently

Error code P0501 is a standardized EOBD code for speed sensor problems and can occur in all vehicles with an OBD system, but is most common in the following vehicles:

Ford: Focus, Fiesta, Mondeo, Transit (1996-2010)
Volkswagen: Golf, Passat, Polo, Jetta (1998-2012)
Opel: Astra, Corsa, Vectra, Zafira (1997-2011)
BMW: 3 Series, 5 Series, X3, X5 (2000-2015)
Mercedes-Benz: C-Class, E-Class, A-Class, Sprinter (1999-2014)
Audi: A3, A4, A6, TT (1997-2013)
Peugeot: 206, 307, 407, Partner (1998-2012)
Renault: Clio, Megane, Scenic, Laguna (1996-2011)
Fiat: Punto, Bravo, Doblo, Ducato (1997-2013)
Toyota: Corolla, Avensis, RAV4, Yaris (1998-2015)

If the code P0501 occurs in your vehicle, you should first check and clean the plug connections on the speed sensor. If the error code occurs repeatedly, a professional diagnosis at a specialist workshop is advisable, as various components may be affected. Early repair prevents consequential damage to other systems such as ABS or automatic transmission.

How to change front wheel bearing on MERCEDES-BENZ M W163 TUTORIAL | AUTODOC

151K views

Published on: 26/07/2018
How to change fuel filter BMW 3 (E90) [TUTORIAL AUTODOC]

241K views

Published on: 17/04/2019
How to change Front wheel bearing on VW GOLF 4 TUTORIAL | AUTODOC

177K views

Published on: 26/07/2018
How to change a rear brake pads FORD FOCUS 3 TUTORIAL | AUTODOC

169K views

Published on: 27/07/2018
How to change pollen filter / cabin filter on AUDI A6 (C6) [TUTORIAL AUTODOC]

150K views

Published on: 25/10/2019
How to change engine thermostat on PEUGEOT 207 [TUTORIAL AUTODOC]

147K views

Published on: 09/12/2020
How to change fuel filter NISSAN X-TRAIL T30 TUTORIAL | AUTODOC

139K views

Published on: 27/07/2018
How to change front wheel bearing TOYOTA YARIS XP10 TUTORIAL | AUTODOC

120K views

Published on: 26/07/2018

How to change serpentine belt on MERCEDES-BENZ A-Class (W169) – replacement guide

Free download PDF
1.38 MB
How to change engine oil and filter on BMW 1 Hatchback (F20) – replacement guide

Free download PDF
1.62 MB
How to change engine thermostat on VW Golf VI Hatchback (5K1) – replacement guide

Free download PDF
4.12 MB
How to change water pump & timing belt kit on Ford Fiesta JA8 – replacement guide

Free download PDF
7.83 MB
How to change front strut mount on AUDI A1 Hatchback (8X1, 8XK) – replacement guide

Free download PDF
3.8 MB
How to change water pump & timing belt kit on Peugeot 307 SW – replacement guide

Free download PDF
7.01 MB

Want to get more useful information?

Ask questions or share your repair experience on the car forum. Subscribe to updates so you don't miss out on new guides.

Ask on the forum

#TPMS Explained: Why Your Light is On and How to Respond Safely

9K views

Published on: 28/09/2023
Cold starts | 5 mistakes that wreck your car

12K views

Published on: 23/10/2025
Revive Your Tyres: Expert Tips for a Lasting Shine | AUTODOC Guide

4K views

Published on: 07/04/2022
DIY engine block coffee table

5K views

Published on: 25/09/2025