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DTC/P0205

P0205 : Injector Circuit / Open - Cylinder 5

Quick Answer
Moderee GraviteConduite possible (a court terme)Systeme de carburant

P0205 means the engine control unit detected an electrical fault (open circuit, short, or out-of-range resistance) in the wiring or driver for the cylinder 5 fuel injector. It appears on engines with five or more cylinders. The injector itself may be fine while the wiring, connector, or ECU driver is at fault. Left unrepaired it causes a cylinder 5 misfire. Typical repair runs about 60 to 350 EUR depending on whether it is wiring or a replacement injector.

Cout de reparation estimeDe 5 € a 700 €+, varie selon le vehicule

Que signifie P0205 ?

P0205 means the engine control unit detected an electrical fault (open circuit, short, or out-of-range resistance) in the wiring or driver for the cylinder 5 fuel injector. It appears on engines with five or more cylinders. The injector itself may be fine while the wiring, connector, or ECU driver is at fault. Left unrepaired it causes a cylinder 5 misfire. Typical repair runs about 60 to 350 EUR depending on whether it is wiring or a replacement injector.

P0205 est un code defaut lie a systeme de carburant, classe en gravite moderate. Lorsque le calculateur de ton vehicule detecte cette condition, il enregistre P0205 et allume le voyant moteur.

Quels sont les symptomes de P0205 ?

Si ton vehicule a declenche P0205, tu peux remarquer un ou plusieurs de ces symptomes :

  • Check engine light illuminated, often flashing under load
  • Rough idle and noticeable misfire
  • Hesitation or stumble on acceleration
  • Loss of power and reduced fuel economy
  • Raw fuel or sulphur smell from the exhaust
  • Hard starting when cold

Quelles sont les causes de P0205 ?

Voici les causes les plus courantes de P0205, classees selon la probabilite qu'elles soient en cause :

eleveeCorroded, loose, or damaged injector connector at cylinder 5
eleveeOpen or shorted wiring in the cylinder 5 injector circuit (chafed harness, rodent damage)
moyenneFailed cylinder 5 injector (open or shorted internal winding)
moyennePoor ground or supply voltage to the injector bank
faibleFailed ECU injector driver for cylinder 5

Peut-on rouler sans risque avec P0205 ?

En general oui, pour des trajets courts. Drivable short-term, but a dead or intermittent cylinder 5 injector causes a misfire that dumps unburnt fuel into the exhaust and can overheat and destroy the catalytic converter. Expect rough running and reduced power. Repair promptly to avoid a much more expensive catalyst replacement.

Comment diagnostique-t-on P0205 ?

Suis ces etapes pour identifier la cause profonde de P0205 :

  1. Read the stored code and freeze frame with Skanyx to confirm it is P0205 and note the conditions (RPM, load, coolant temp) when it set
  2. Check for a companion P0300 random misfire code, which points to a genuine combustion problem on the affected cylinder
  3. Inspect the cylinder 5 injector connector and harness for corrosion, looseness, melted pins, or chafing
  4. With the engine off, measure the injector winding resistance with a multimeter and compare against the workshop spec (most petrol injectors read roughly 12-17 ohms)
  5. Check for the injector control and supply circuits with a multimeter or test light, and swap the suspect injector to another cylinder to see if the fault follows it
  6. Note that per-injector coding, flow balance, and quantity-correction values are not on generic OBD2 - read those with a brand tool such as Carly, OBDeleven, or XENTRY, or have a workshop verify them

Combien coute la reparation de P0205 ?

Les couts de reparation de P0205 varient selon la cause profonde et ton vehicule. Voici des estimations courantes :

Reparation Cout des pieces Cout de main-d'oeuvre Estimation totale Difficulte en autonomie
Repair connector or wiring (DIY) €5–€30 €0–€0 €5–€30 Moderee
Diagnose and repair wiring/connector (shop) €5–€40 €60–€180 €65–€220 Professionnel
Replace injector - petrol (shop) €40–€150 €60–€160 €100–€310 Moderee
Replace injector - diesel common-rail (shop) €150–€400 €120–€300 €270–€700 Professionnel

Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.

P0205 sur des vehicules specifiques

P0205 se comporte differemment selon ton vehicule. Selectionne ta voiture ci-dessous pour des causes propres au modele, les problemes connus et des estimations de couts ajustees :

Volkswagen

P0205 sur Volkswagen Golf

2004-2024

Standard four-cylinder Golfs do not have a cylinder 5, so P0205 only applies to the five-cylinder 2.5 (US-market) and the Golf R32 VR6. On those engines the injector connectors near the head become brittle with heat. VR6 packaging makes the rear-bank injectors awkward to reach, raising labour.

Quelles sont les causes de P0205 sur une Volkswagen Golf ?

Volkswagen GolfBrittle injector connector clip on 2.5 five-cylinder petrol
Volkswagen GolfAwkward rear-bank injector access on VR6 raising labour

Cout de reparation de P0205 pour Volkswagen Golf

Couts estimes pour les proprietaires de Volkswagen Golfajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Volkswagen

Reparation Cout des pieces Cout de main-d'oeuvre Estimation totale Difficulte en autonomie
Repair connector or wiring (DIY) €6–€35 €0–€0 €6–€35 Moderee
Diagnose and repair wiring/connector (shop) €6–€46 €69–€207 €75–€253 Professionnel
Replace injector - petrol (shop) €46–€173 €69–€184 €115–€357 Moderee
Replace injector - diesel common-rail (shop) €173–€460 €138–€345 €311–€805 Professionnel

Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.

BMW

P0205 sur BMW 3 Series

2005-2024

The inline-6 petrol (N52, N54, N55, B58) and diesel (M57, N57) engines all have a cylinder 5. Petrol injector faults are usually connector corrosion or chafe, while N57/M57 diesel common-rail injectors are costly and need injector coding after replacement via Carly, ISTA, or a workshop. Skanyx reads the generic circuit code and misfire codes only.

Quelles sont les causes de P0205 sur une BMW 3 Series ?

BMW 3 SeriesCorroded or loose injector connector on inline-6 petrol
BMW 3 SeriesDiesel common-rail injector failure requiring coding on M57/N57

Cout de reparation de P0205 pour BMW 3 Series

Couts estimes pour les proprietaires de BMW 3 Seriesajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a BMW

Reparation Cout des pieces Cout de main-d'oeuvre Estimation totale Difficulte en autonomie
Repair connector or wiring (DIY) €7–€42 €0–€0 €7–€42 Moderee
Diagnose and repair wiring/connector (shop) €7–€56 €84–€252 €91–€308 Professionnel
Replace injector - petrol (shop) €56–€210 €84–€224 €140–€434 Moderee
Replace injector - diesel common-rail (shop) €210–€560 €168–€420 €378–€980 Professionnel

Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.

Ford

P0205 sur Ford Focus

2005-2024

Most Focus engines are four-cylinder, but the first-generation Focus ST and RS used the five-cylinder Duratec/Volvo 2.5T which has a cylinder 5. On that engine the injector harness routes near the hot turbo side and heat-damaged wiring is a common P0205 cause. Connector corrosion is the next most likely.

Quelles sont les causes de P0205 sur une Ford Focus ?

Ford FocusHeat-damaged injector wiring on five-cylinder 2.5T turbo
Ford FocusConnector corrosion near the cylinder 5 injector

Cout de reparation de P0205 pour Ford Focus

Couts estimes pour les proprietaires de Ford Focusajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Ford

Reparation Cout des pieces Cout de main-d'oeuvre Estimation totale Difficulte en autonomie
Repair connector or wiring (DIY) €5–€32 €0–€0 €5–€32 Moderee
Diagnose and repair wiring/connector (shop) €5–€42 €63–€189 €68–€231 Professionnel
Replace injector - petrol (shop) €42–€158 €63–€168 €105–€326 Moderee
Replace injector - diesel common-rail (shop) €158–€420 €126–€315 €284–€735 Professionnel

Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.

Mercedes-Benz

P0205 sur Mercedes C-Class

2007-2024

Inline-6 petrol (M256) and inline-6 diesel (OM656) C-Class variants have a cylinder 5. The OM656 and earlier inline-5 OM612/OM647 diesels use costly common-rail injectors with calibration codes that must be written via XENTRY or a workshop after replacement. Petrol variants usually fault from a corroded connector or chafed harness.

Quelles sont les causes de P0205 sur une Mercedes C-Class ?

Mercedes C-ClassCommon-rail injector with calibration coding on OM656/inline-5 diesel
Mercedes C-ClassConnector corrosion or harness chafe on M256 petrol

Cout de reparation de P0205 pour Mercedes C-Class

Couts estimes pour les proprietaires de Mercedes C-Classajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Mercedes-Benz

Reparation Cout des pieces Cout de main-d'oeuvre Estimation totale Difficulte en autonomie
Repair connector or wiring (DIY) €7–€39 €0–€0 €7–€39 Moderee
Diagnose and repair wiring/connector (shop) €7–€52 €78–€234 €85–€286 Professionnel
Replace injector - petrol (shop) €52–€195 €78–€208 €130–€403 Moderee
Replace injector - diesel common-rail (shop) €195–€520 €156–€390 €351–€910 Professionnel

Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.

Ces codes apparaissent souvent avec P0205 ou indiquent des problemes connexes :

Questions frequentes sur P0205

Does P0205 mean the injector is bad?

Not necessarily. P0205 is an electrical circuit fault for cylinder 5, and the wiring, connector, or ECU driver is at fault just as often as the injector itself. Check the connector and harness before buying a new injector.

Can I drive with a P0205 code?

For a short distance, yes, but you should not. A dead cylinder 5 injector causes a misfire that pushes unburnt fuel into the exhaust and can overheat and ruin the catalytic converter. Fix it promptly to avoid a far bigger bill.

Which engines have a cylinder 5?

P0205 only appears on engines with five or more cylinders, such as inline-5 and inline-6 petrol and diesel engines and V6/V8 layouts. Five-cylinder Audi, Volvo, and Mercedes engines and inline-6 BMW diesels are common examples.

How do I know if it is the wiring or the injector?

Measure the injector resistance and compare it to spec, then inspect and wiggle-test the connector and harness. If resistance is in spec and the wiring is clean, suspect the circuit or ECU driver. Swapping the injector to another cylinder shows whether the fault moves with the part.

Is it cheaper to clean an injector than replace it?

Cleaning helps a clogged or dirty injector, but P0205 is an electrical fault, not a flow problem, so cleaning rarely fixes it. The fix is repairing the circuit or replacing a failed injector.

Skanyx

Scanne ta voiture avec Skanyx pour diagnostiquer P0205

Branche un adaptateur OBD2 Bluetooth standard, scanne les codes et obtiens un diagnostic par IA avec niveaux de gravite et estimations des couts de reparation.

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