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DTC/P0352

P0352: Ignition Coil B Primary/Secondary Circuit Malfunction

Quick Answer
Moderata GravitàNon sicuro da guidareAccensione

P0352 means the ECU saw an abnormal voltage pattern on the primary control circuit of ignition coil #2. In plain terms: cylinder 2 isn't getting a reliable spark command, so it misfires.

Costo di riparazione stimatoDa €60 a €850+, varia in base al veicolo

Scansiona la tua auto in circa 60 secondi: scopri se P0352 è davvero presente, quanto è urgente e quanto dovrebbe costare la riparazione.

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Cosa significa P0352?

P0352 means the ECU saw an abnormal voltage pattern on the primary control circuit of ignition coil #2. In plain terms: cylinder 2 isn't getting a reliable spark command, so it misfires.

P0352 è un codice diagnostico di guasto relativo a accensione, classificato con gravità moderate. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0352 e accende la spia motore.

Quali sono i sintomi di P0352?

Se il tuo veicolo ha attivato P0352, potresti notare uno o più di questi sintomi:

  • Rough idle with a distinct shake from one cylinder
  • Check engine light on, flashing under load if the misfire is active
  • Power loss on acceleration, especially above 3,000 RPM
  • Fuel economy drop of roughly 10 to 20%
  • Cold-start hesitation or stumble that clears once warm
  • Occasional stall at idle or when coming to a stop
  • Fuel smell from the tailpipe and hot exhaust downstream of the manifold

Cosa causa P0352?

Ecco le cause più comuni di P0352:

altaFailed coil-on-plug or coil pack on cylinder 2
altaWorn spark plug with wide gap forcing the coil to arc harder until it fails
mediaCracked coil boot arcing to the valve cover or head
mediaCorroded or backed-out pin in the coil connector
mediaOil in the plug well from a leaking valve cover gasket shorting the coil
bassaOpen or shorted wire between PCM and coil primary, or failed PCM ignition driver

È sicuro guidare con P0352?

No, risolvi subito il problema. You can limp home, but continued driving with a misfiring cylinder dumps raw fuel into the catalytic converter. A new cat runs €400 to €1,500+, versus €30 to €120 for a coil. Don't push it.

Come si diagnostica P0352?

Segui questi passaggi per individuare la causa principale di P0352:

  1. Scan for all stored codes and freeze frame data. If P0302 is also present, you've confirmed cylinder 2 is the misfiring one
  2. Pull coil #2 and inspect the boot for cracks, carbon tracking, and oil. Check the connector pins for green corrosion or a backed-out terminal
  3. Swap coil #2 with coil #1 or #3, clear codes, drive and rescan. If the P0352 becomes P0351 or P0353, the coil is bad
  4. If the code stays on cylinder 2, pull spark plug #2. Look for wide gap, oil fouling, cracked insulator, or wrong heat range
  5. Measure primary resistance across the coil terminals (typical 0.4 to 2.0 ohms) and secondary if accessible (5k to 15k ohms). Compare to service manual spec, not gut feel
  6. Key on, engine off: back-probe the coil connector for switched 12V on the supply pin. Cranking: verify the PCM is pulsing the trigger wire (test light flicker or scope)
  7. If supply, ground, trigger, coil, and plug all check out, scope the primary waveform. A missing or flat trigger points to the PCM ignition driver
  8. After repair, clear codes and run a drive cycle covering idle, part-throttle, and full-throttle to confirm the misfire counter stays at zero

Quanto costa riparare P0352?

I costi di riparazione di P0352 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 single ignition coil €30–€120 €30–€90 €60–€210 Facile
Replace coil + spark plug on cylinder 2 €45–€160 €40–€120 €85–€280 Facile
Replace full coil set + all spark plugs €180–€600 €80–€250 €260–€850 Moderata
Repair or replace coil harness / connector pigtail €15–€60 €60–€180 €75–€240 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €60–€220 €150–€400 €210–€620 Moderata

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

P0352 su veicoli specifici

P0352 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:

Ford

P0352 su Ford F-150

2004-2014

5.4L 3V Triton uses Motorcraft DG-511 coils that commonly fail between 100,000 and 150,000 km. Cylinder 2 is the second from the front on the passenger bank.

Cosa causa P0352 su una Ford F-150?

Ford F-150DG-511 coil boot cracking and arcing to the cam cover bolt
Ford F-150Two-piece spark plug seizing in the head, previous plug change left the boot damaged

Costo di riparazione di P0352 per Ford F-150

Costi stimati per i proprietari di Ford F-150adeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici Ford

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Replace single ignition coil €33–€132 €33–€99 €66–€231 Facile
Replace coil + spark plug on cylinder 2 €50–€176 €44–€132 €94–€308 Facile
Replace full coil set + all spark plugs €198–€660 €88–€275 €286–€935 Moderata
Repair or replace coil harness / connector pigtail €17–€66 €66–€198 €83–€264 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €66–€242 €165–€440 €231–€682 Moderata

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

Toyota

P0352 su Toyota Camry

2002-2011

2AZ-FE 2.4L and 1MZ-FE 3.0L V6 both develop valve cover gasket and spark plug tube seal leaks that flood the plug well with oil and short the coil.

Cosa causa P0352 su una Toyota Camry?

Toyota CamryOil in the #2 plug tube from a failed spark plug tube seal
Toyota CamryDenso coil internal breakdown past 200,000 km

Costo di riparazione di P0352 per Toyota Camry

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

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Replace single ignition coil €27–€108 €27–€81 €54–€189 Facile
Replace coil + spark plug on cylinder 2 €41–€144 €36–€108 €77–€252 Facile
Replace full coil set + all spark plugs €162–€540 €72–€225 €234–€765 Moderata
Repair or replace coil harness / connector pigtail €14–€54 €54–€162 €68–€216 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €54–€198 €135–€360 €189–€558 Moderata

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

Volkswagen

P0352 su VW Golf Mk5/Mk6

2006-2014

2.0 TSI (CCTA/CBFA) and 2.5L five-cylinder had the well-documented red-top coil failure that led to a VW campaign replacing them with black/brown units.

Cosa causa P0352 su una VW Golf Mk5/Mk6?

VW Golf Mk5/Mk6Original red-top 06E905115 coils failing in clusters
VW Golf Mk5/Mk6Water intrusion into coil harness from clogged plenum drains under the cowl

Costo di riparazione di P0352 per VW Golf Mk5/Mk6

Costi stimati per i proprietari di VW Golf Mk5/Mk6adeguato 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 single ignition coil €35–€138 €35–€103 €69–€241 Facile
Replace coil + spark plug on cylinder 2 €52–€184 €46–€138 €98–€322 Facile
Replace full coil set + all spark plugs €207–€690 €92–€288 €299–€977 Moderata
Repair or replace coil harness / connector pigtail €17–€69 €69–€207 €86–€276 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €69–€253 €173–€460 €241–€713 Moderata

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

BMW

P0352 su BMW 3-Series (E90/E92)

2006-2013

N52 and N54 engines run Bosch or Delphi pencil coils that typically fail between 100,000 and 140,000 km. Cylinder 2 is second back from the radiator on the inline-six.

Cosa causa P0352 su una BMW 3-Series (E90/E92)?

BMW 3-Series (E90/E92)Valve cover gasket leak soaking coil boots (very common on N52 past 150,000 km)
BMW 3-Series (E90/E92)Heat-cracked coil housings on N54 turbo, especially cylinders 2 and 5

Costo di riparazione di P0352 per BMW 3-Series (E90/E92)

Costi stimati per i proprietari di BMW 3-Series (E90/E92)adeguato 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 single ignition coil €38–€150 €38–€113 €75–€263 Facile
Replace coil + spark plug on cylinder 2 €56–€200 €50–€150 €106–€350 Facile
Replace full coil set + all spark plugs €225–€750 €100–€313 €325–€1063 Moderata
Repair or replace coil harness / connector pigtail €19–€75 €75–€225 €94–€300 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €75–€275 €188–€500 €263–€775 Moderata

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

Honda

P0352 su Honda Civic (8th/9th gen)

2006-2015

R18 1.8L SOHC has a durable coil-on-plug setup. When P0352 shows up here it's more often the plug or a loose connector than a dead coil.

Cosa causa P0352 su una Honda Civic (8th/9th gen)?

Honda Civic (8th/9th gen)Iridium plug (NGK IZFR6K11) worn past 160,000 km service interval
Honda Civic (8th/9th gen)Coil connector locking tab broken, letting the plug back out under vibration

Costo di riparazione di P0352 per Honda Civic (8th/9th gen)

Costi stimati per i proprietari di Honda Civic (8th/9th gen)adeguato al ribasso rispetto alla media a causa dei prezzi dei ricambi specifici Honda

Riparazione Costo dei ricambi Costo della manodopera Stima totale Difficoltà fai-da-te
Replace single ignition coil €26–€102 €26–€77 €51–€179 Facile
Replace coil + spark plug on cylinder 2 €38–€136 €34–€102 €72–€238 Facile
Replace full coil set + all spark plugs €153–€510 €68–€213 €221–€723 Moderata
Repair or replace coil harness / connector pigtail €13–€51 €51–€153 €64–€204 Moderata
Valve cover gasket + coil + plug (oil-fouled well) €51–€187 €128–€340 €179–€527 Moderata

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

Questi codici compaiono spesso insieme a P0352 o indicano problemi correlati:

Domande frequenti su P0352

Which cylinder is coil B on my engine?

Coil B is cylinder 2 by the engine's factory numbering, not the second coil from the front of the valve cover. On transverse V6s, boxer fours, and some inline sixes the numbering isn't obvious. Check the service manual or a decal on the intake before you start swapping parts.

Can I just swap coils and drive on it?

Swapping coil #2 with coil #1 to see if the code follows is a legit diagnostic step. But if the CEL is flashing, you're melting the catalytic converter every kilometer. Do the swap, then either fix it or park it within a day or two.

I replaced the coil and P0352 came back the next day. Why?

Three usual suspects: a defective new coil (common with €10 no-name parts from marketplaces), a worn spark plug you didn't replace, or a wiring/connector fault that killed the original and just killed the new one. Check the plug and connector before buying a third coil.

Should I replace all coils at once or just #2?

If the coils are original and past 150,000 km, replacing the set saves you from chasing P0351, P0353, and P0354 over the next year. If the car is newer or the coil failed from something external like oil intrusion, just do the one.

Will P0352 fail a technical inspection?

Yes. An active CEL is an automatic fail on MOT/emissions checks across the EU and most US states. Clearing the code right before the test also fails, since readiness monitors won't be set.

Leggi le nostre guide dettagliate

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Esegui la scansione della tua auto con Skanyx per diagnosticare P0352

La tua auto ha registrato P0352. Skanyx lo legge con qualsiasi adattatore OBD2 Bluetooth standard, ti dice se puoi continuare a guidare in sicurezza e mostra la fascia di riparazione di €60-€850 così conosci la cifra prima che un'officina ti faccia un preventivo.

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