Problem Statement
The P0302 code indicates a misfire detected in cylinder 2 of a BMW 3 Series F30/F31 (2012-2019), which can cause engine performance issues and increased emissions.
how to fix P0302 code in BMW 3 Series F30/F31 (2012-2019)
BMW 3 Series F30/F31 (2012-2019)
2-4 hours
Time
medium
Difficulty
medium
Severity
3 min read
555 words
Error Code
P0302Estimated Time
2-4 hours
⚠️ Safety Warnings
Important safety information - read before proceeding
- •Disconnect the battery before working on electrical components.
- •Allow the engine to cool before removing any components to avoid burns.
Symptoms
- •Check engine light illuminated
- •Rough idle or engine shake
- •Decreased power during acceleration
- •Poor fuel economy
- •Possible fuel smell from the exhaust
Diagnostic Steps
- 1
- 2
- 3
- 4
- 5
- 6
Solution
💡 Expert Tip
For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.
Verification
After completing the repair, verify that the issue has been resolved:
- ✓Test the affected component to ensure it functions correctly
- ✓Check for any error codes or warning lights
- ✓Monitor the vehicle for a few days to ensure the issue does not recur
Prevention Tips
To prevent this issue from occurring again:
- •Follow the manufacturer's recommended maintenance schedule
- •Address warning signs early before they develop into major issues
- •Use quality parts and fluids recommended for your vehicle
- •Keep detailed records of all repairs and maintenance
Tools & Equipment Required
- •Disconnect the battery to prevent electrical shorts.
Parts Required
- •Spark plug (for cylinder 2)
- •Ignition coil (if faulty)
- •Fuel injector (if clogged or damaged)
Related Faults
Loading...