Cylinder 6 Knock Detected
The P2341 code indicates that the engine control module (ECM) has detected a knock (detonation) in cylinder 6 that exceeds the calibrated threshold. This is often caused by improper fuel octane, carbon buildup, or mechanical issues like a faulty knock sensor or engine timing problems. Continued operation can lead to severe engine damage.
01. Most Common Causes
- Low octane fuel or poor fuel quality
- Carbon buildup on pistons or valves
- Faulty knock sensor or wiring
- Engine timing off (over-advanced)
- Cooling system issues causing overheating
02. Symptoms You Will Notice
- Check Engine Light on
- Audible knocking noise from engine
- Reduced engine power or hesitation
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data
Step 2: Inspect knock sensor and wiring for damage
Step 3: Check fuel octane level and quality
Step 4: Perform compression test on cylinder 6
Step 5: Inspect for carbon buildup using borescope
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving with a knock can cause severe engine damage. Have it diagnosed immediately.
How much does it cost to fix?▼
Costs vary; diagnosis is $50-$150, repairs can range from $100 for a knock sensor to $1000+ for internal engine work.