P1347 BMW Code - Misfire Cylinder 3 With Fuel Cut-off
Quick Answer
The P1347 BMW code indicates a misfire in cylinder 3 with fuel cut-off. Common causes include Faulty spark plug: A worn or damaged spark plug can cause misfires, Defective ignition coil: The ignition coil may fail, leading to a misfire, Clogged fuel injector: A clogged fuel injector can disrupt fuel delivery to the cylinder. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1347 BMW indicates Misfire Cylinder 3 With Fuel Cut-off.
- Common causes
- Common causes include Faulty spark plug: A worn or damaged spark plug can cause misfires, Defective ignition coil: The ignition coil may fail, leading to a misfire, Clogged fuel injector: A clogged fuel injector can disrupt fuel delivery to the cylinder.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1347 BMW Description
The P1347 BMW code indicates a misfire in cylinder 3 with fuel cut-off. When this code is triggered, it means that the engine's control module has detected a misfire in cylinder 3, leading to the fuel supply being cut off to that cylinder. This can result in rough idling, decreased performance, and potential damage to the engine if left unresolved.
Common Causes of P1347 BMW
- Faulty spark plug: A worn or damaged spark plug can cause misfires.
- Defective ignition coil: The ignition coil may fail, leading to a misfire.
- Clogged fuel injector: A clogged fuel injector can disrupt fuel delivery to the cylinder.
- Low compression: Issues with cylinder compression can lead to misfires.
- Vacuum leak: A vacuum leak can affect air-fuel mixture ratios, causing misfires.
Symptoms of P1347 BMW
- Rough idling: The engine may run unevenly or feel shaky at idle.
- Decreased performance: The vehicle may lack power and acceleration.
- Engine vibration: Excessive shaking or vibration may be felt while driving.
- Check Engine Light: The check engine light may illuminate on the dashboard.
- Fuel smell: A rich fuel smell may be present due to unburnt fuel in the exhaust.
How to Fix P1347 BMW
- Diagnose the issue: Use a scan tool to identify the specific cylinder misfire and inspect related components.
- Replace spark plug: If the spark plug is faulty, replace it with a new one.
- Test ignition coil: Check the ignition coil for proper functioning and replace if necessary.
- Clean or replace fuel injector: Clean the fuel injector or replace it if clogged.
- Check compression: Perform a compression test to verify cylinder compression levels.
Cost to Fix P1347 BMW
The typical repair costs for addressing a misfire in cylinder 3 with fuel cut-off can range from $150 to $500, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes parts and labor, but additional fees may apply for diagnostic time and any other necessary repairs. It's recommended to consult with a professional mechanic for a more accurate cost estimate based on the vehicle's make and model. Remember that labor rates can vary, so it's advisable to inquire about local rates before proceeding with the repair.
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Frequently Asked Questions about P1347 BMW Code
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Discuss the causes and fixes for P1347 BMW OBDII Code
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I had a problem with code: P1347, I changed all the spark plugs and my car was still running rough. I ran the diagnosis again and I was still coming up with the same code. I started searching on the web, and found P1347 refers to cylinder 3, so I changed the ignition coil (only that one) and the car runs great now.
PS cylinder 3 is located on the passenger side, second from the rear going towards the headlights. Hope this helps.....
I have a 2004 745Li
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