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DTC/P0335

P0335: Crankshaft Position Sensor "A" Circuit Malfunction

Quick Answer
Critica GravitàNon sicuro da guidareAccensione

P0335 means the engine control unit is not receiving a valid signal from the crankshaft position sensor. This sensor tells the ECU where the crankshaft is in its rotation, which is essential for fuel injection and ignition timing. Without it, the engine may not start or may stall unexpectedly.

Costo di riparazione stimatoDa €70 a €720+, varia in base al veicolo

Cosa significa P0335?

P0335 means the engine control unit is not receiving a valid signal from the crankshaft position sensor. This sensor tells the ECU where the crankshaft is in its rotation, which is essential for fuel injection and ignition timing. Without it, the engine may not start or may stall unexpectedly.

P0335 è un codice diagnostico di guasto relativo a accensione, classificato con gravità critical. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0335 e accende la spia motore.

Quali sono i sintomi di P0335?

Se il tuo veicolo ha attivato P0335, potresti notare uno o più di questi sintomi:

  • Engine cranks but will not start
  • Intermittent stalling, especially when warm
  • Check engine light on
  • Engine cuts out suddenly while driving
  • Rough running or hesitation
  • Tachometer drops to zero or behaves erratically

Cosa causa P0335?

Ecco le cause più comuni di P0335, ordinate in base alla probabilità che siano la causa del problema:

altaFailed crankshaft position sensor
mediaDamaged or corroded wiring to the sensor
mediaLoose or dirty sensor connector
bassaDamaged reluctor ring (tone wheel) on the crankshaft
bassaECU fault (rare)

È sicuro guidare con P0335?

No, risolvi subito il problema. A faulty crankshaft position sensor can cause the engine to stall without warning, including at motorway speeds. The engine may also refuse to start. Do not drive until this is resolved.

Come si diagnostica P0335?

Segui questi passaggi per individuare la causa principale di P0335:

  1. Connect a scanner and check for the P0335 code along with any companion codes such as P0336 (range/performance) or P0340 (camshaft sensor)
  2. Inspect the crankshaft position sensor connector for corrosion, oil contamination, or loose pins. Clean and re-seat the connector
  3. Test the sensor output with a multimeter. For a Hall-effect sensor, check for 5V reference, ground, and signal. For a magnetic sensor, measure resistance (typically 200-2000 ohms depending on the make)
  4. Inspect the wiring harness from the sensor to the ECU for chafing, breaks, or heat damage. Pay attention to areas near the exhaust
  5. If the sensor and wiring test good, inspect the reluctor ring on the crankshaft pulley for missing teeth, cracks, or debris

Quanto costa riparare P0335?

I costi di riparazione di P0335 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
Replace crankshaft position sensor €20–€100 €50–€200 €70–€300 Moderata
Repair wiring harness to sensor €10–€50 €60–€180 €70–€230 Moderata
Replace reluctor ring (tone wheel) €30–€120 €200–€600 €230–€720 Professionale

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

P0335 su veicoli specifici

P0335 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:

Volkswagen

P0335 su Volkswagen Golf

2003-2024

On the 1.9 TDI (ALH/BEW) and 2.0 TDI (BKD/CBDB) engines, the crankshaft position sensor is located on the gearbox bellhousing. Oil leaks from the rear main seal can contaminate the sensor. The EA888 petrol engine sensor is more accessible on the front of the block.

Cosa causa P0335 su una Volkswagen Golf?

Volkswagen GolfOil contamination from rear main seal leak on TDI engines
Volkswagen GolfWiring chafe near exhaust manifold on EA888 engines

Costo di riparazione di P0335 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
Replace crankshaft position sensor €22–€110 €55–€220 €77–€330 Moderata
Repair wiring harness to sensor €11–€55 €66–€198 €77–€253 Moderata
Replace reluctor ring (tone wheel) €33–€132 €220–€660 €253–€792 Professionale

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

BMW

P0335 su BMW 3 Series

2005-2024

The N46 and N52 engines have the crankshaft sensor at the rear of the block near the flywheel, requiring access from below. On the N47 diesel, the sensor can fail due to oil contamination from the infamous timing chain oil leak. Replacement is straightforward once accessed.

Cosa causa P0335 su una BMW 3 Series?

BMW 3 SeriesSensor contamination from oil leaks on N47 diesel
BMW 3 SeriesHeat-related sensor failure on N52 petrol engines

Costo di riparazione di P0335 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
Replace crankshaft position sensor €26–€130 €65–€260 €91–€390 Moderata
Repair wiring harness to sensor €13–€65 €78–€234 €91–€299 Moderata
Replace reluctor ring (tone wheel) €39–€156 €260–€780 €299–€936 Professionale

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

Renault

P0335 su Renault Clio

2005-2024

The 1.5 dCi (K9K) engine is one of the most common engines to trigger P0335 in Europe. The sensor is located on the gearbox side of the engine block and is prone to connector corrosion in wet climates. Renault uses a Hall-effect type sensor that requires a 5V reference.

Cosa causa P0335 su una Renault Clio?

Renault ClioConnector corrosion on K9K 1.5 dCi engines
Renault ClioSensor failure due to heat cycling on high-mileage vehicles

Costo di riparazione di P0335 per Renault Clio

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

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Replace crankshaft position sensor €18–€90 €45–€180 €63–€270 Moderata
Repair wiring harness to sensor €9–€45 €54–€162 €63–€207 Moderata
Replace reluctor ring (tone wheel) €27–€108 €180–€540 €207–€648 Professionale

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

Ford

P0335 su Ford Focus

2005-2022

On the 1.6 TDCi (DV6) and 1.8 TDCi engines, the crankshaft sensor is mounted low on the engine block. Road debris and water ingress through the wheel arch can damage the wiring. The 1.0 EcoBoost sensor is more protected but can fail from heat cycling.

Cosa causa P0335 su una Ford Focus?

Ford FocusWater ingress and wiring damage on 1.6/1.8 TDCi
Ford FocusSensor heat failure on 1.0 EcoBoost

Questi codici compaiono spesso insieme a P0335 o indicano problemi correlati:

P0336P0340P0341P0016P0300

Domande frequenti su P0335

Can a bad crankshaft position sensor cause a no-start?

Yes. The crankshaft position sensor provides the primary signal that tells the ECU when to fire the spark plugs and injectors. Without this signal, most engines will crank but refuse to start entirely.

What does the crankshaft position sensor do?

It monitors the rotational speed and position of the crankshaft using a toothed reluctor ring. The ECU uses this data to precisely time fuel injection and ignition events. It is one of the most critical engine sensors.

Why does my car stall when warm with P0335?

Heat-related stalling is a classic symptom of a failing crankshaft position sensor. As the sensor heats up, internal components expand and lose their ability to generate a clean signal. The engine often restarts after cooling down.

How much does it cost to replace a crankshaft position sensor?

The sensor itself typically costs 20 to 100 EUR. Labour ranges from 50 to 200 EUR depending on the sensor location. On many vehicles it is accessible from underneath or behind the engine, making it a straightforward replacement.

Can I replace the crankshaft position sensor myself?

On many cars it is a moderate DIY job. The sensor is usually held in by one or two bolts. The challenge is access, as it is often located low on the engine block near the starter or behind the crankshaft pulley. You will need a jack and possibly a socket extension.

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Esegui la scansione della tua auto con Skanyx per diagnosticare P0335

Collega un adattatore OBD2 Bluetooth standard, esegui la scansione dei codici e ottieni una diagnosi basata sull'IA con livelli di gravità e stime dei costi di riparazione.

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