Code
P0030
Emissions
Circuit chauffage sonde — Rangée 1 Capteur 1
Le circuit de chauffage de la sonde amont a un défaut.
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Most likely causes
- Fusible grillé
- Chauffage défectueux
- Câblage
Symptoms you may notice
- Check engine light
- Slow warm-up to closed loop
Checks to run
- Test heater circuit
- Check fuse
- Inspect wiring
Tools you may need
Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.