Can I diagnose P0308 with a basic code reader?

Yes — P0308 is typically accessible with a basic OBD2 code reader like the TOPDON ArtiDiag201 or TopScan Lite. Live data helps confirm the repair.

Which TOPDON scanner do I need for P0308?

Basic OBD2 code reader (engine codes, live data, smog readiness) See recommended tools on this page.

Is it safe to drive with P0308?

It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.

P0308

Sistema: Powertrain (Engine)
Scanner richiesto: Basic OBD2 code reader (engine codes, live data, smog readiness)

Cylinder 8 Misfire Detected

Understand P0308, common causes, and the right TOPDON scanner to diagnose it.

The ECU detected repeated misfires on cylinder 8 only. Unlike P0300 (random/multiple misfire), P0308 points to a specific cylinder — spark, fuel, or compression on that bore.

Sintomi comuni

Rough idle that may feel rhythmic
Loss of power under load
Check engine light
Possible fuel smell from unburned fuel

Cause tipiche

Worn spark plug or failed ignition coil on cylinder 8
Clogged or leaking fuel injector for cylinder 8
Low compression on cylinder 8 (valve, ring, or head gasket)
Vacuum leak affecting one runner (intake gasket, cracked hose)
Loose or damaged coil-on-plug boot on cylinder 8

Di quale scanner hai bisogno?

Basic OBD2 code reader (engine codes, live data, smog readiness)

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono di solito uno scanner full-system.

Consigli diagnostici

Registra il freeze frame quando compare il codice
Cancella il codice solo dopo aver risolto la causa
Controlla codici pending correlati
Verifica che la batteria sia sopra 12,4 V prima di sospettare i sensori

Scanner TOPDON consigliati

TOPDON AL400 OBD2 Scanner

Collegalo a qualsiasi veicolo OBD2 dal 1996 in poi, estrai i codici in pochi secondi e utilizza la libreria DTC integrata per comprendere le definizioni dei guasti prima di visitare un negozio. Ideale come prima diagnosi.

4.5 (832 ratings)

27,89 €

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-14%

TOPDON AD500 OBD2 Scanner Car Code Reader

Il ripristino del servizio dell'olio, la calibrazione SAS, il riapprendimento TPMS, la registrazione della batteria BMS e le routine EPB ti aiutano a completare i lavori di manutenzione per i quali le officine spesso addebitano la manodopera. Velocità AutoVIN.

142,27 € ~~165,54 €~~

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Domande frequenti

What does P0308 mean?: P0308 indicates cylinder 8 misfire detected. The ECU detected repeated misfires on cylinder 8 only. Unlike P0300 (random/multiple misfire), P0308 points to a specific cylinder — spark, fuel, or compression on that bore.
Can I diagnose P0308 with a basic code reader?: Yes — P0308 is typically accessible with a basic OBD2 code reader like the TOPDON ArtiDiag201 or TopScan Lite. Live data helps confirm the repair.
Which TOPDON scanner do I need for P0308?: Basic OBD2 code reader (engine codes, live data, smog readiness) See recommended tools on this page.
Is it safe to drive with P0308?: It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.