What This Actually Means
In plain language — no jargon
Coil K isn't firing properly, like a spark plug that won't ignite the fuel mixture. The ECU detected an electrical problem in the ignition coil's primary or secondary circuit.
Symptoms You May Notice
3 known symptoms for this code
Engine misfire on cylinder K (often cylinder 7 or 8)
Check Engine Light illuminated
Rough idle and loss of power
How Your ECU Detects This
Technical sensor logic and voltage thresholds
The ECU monitors voltage and current in the ignition coil K circuit during charging and discharge cycles. It checks for proper coil resistance, adequate voltage rise during primary winding saturation, and secondary spark generation. A fault is detected when resistance or voltage deviates significantly from expected values or the coil fails to respond to drive commands.
Voltage & Parameter Thresholds
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Primary Winding Resistance | 0.4–2 ohms | >5 ohms or open circuit |
| Coil Output Voltage | 20,000–40,000 volts | <15,000 volts or no spark |
Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Spark plug for cylinder K
Replace the spark plug; a worn plug increases required voltage and can trigger a coil fault code.
2
Ignition coil K
Unplug the coil connector, remove the retaining bolt, and swap in a new coil; verify proper seating on the spark plug.
3
Engine harness connectors and coil wiring
Inspect for corrosion, loose pins, or damaged insulation on coil K connectors and reprogram or reseat connections as needed.
When to See a Professional Mechanic
Not all fault codes are safe to DIY
Code P0362 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Safety note: OBD-II codes identify the system or circuit where a fault was detected — they do not always identify the exact failed component. A professional mechanic using live sensor data will diagnose the root cause more accurately than replacing parts based on the code alone.
How to Clear Code P0362
What happens after you fix the fault
Once the fault is repaired, P0362 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.
✅ Safe to Clear When
- Fault has been diagnosed and repaired
- You want to confirm the repair worked
- Code appeared after a sensor was cleaned
⚠️ Do Not Clear When
- Preparing for an emissions/PUC test
- Root cause is still undiagnosed
- Check engine light is flashing
Emissions test note: Clearing codes resets OBD readiness monitors. Most vehicles need 50–100 km of mixed driving before monitors complete. Do not clear codes immediately before an emissions or PUC inspection.