Ignition Coil K Primary/Secondary Circuit Malfunction
The P0361 code indicates a malfunction in the primary or secondary circuit of ignition coil K. This coil is responsible for firing a specific cylinder (typically cylinder 6 on some engines). The Powertrain Control Module (PCM) detects an abnormal voltage or current in the coil's primary winding or a lack of spark from the secondary winding. This can cause misfires, reduced engine performance, and increased emissions.
01. Most Common Causes
- Faulty ignition coil K
- Open or shorted wiring in the coil circuit
- Bad spark plug or spark plug wire
- Failed PCM (rare)
02. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Reduced fuel economy
- Hesitation or lack of power during acceleration
03. Step-by-Step Diagnosis
Step 1: Scan for codes and note freeze frame data.
Step 2: Inspect ignition coil K and its wiring for damage or corrosion.
Step 3: Swap coil K with another coil and see if the code moves to the new cylinder.
Step 4: Test spark plug and wire for the affected cylinder.
Step 5: Check for proper voltage and ground at the coil connector.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive for long distances as it can cause catalytic converter damage and poor performance.
How much does it cost to fix?▼
Typically $50-$150 for a DIY coil replacement, or $100-$250 at a shop including labor.