← View Generic P0377 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
P0377: P0377: Ignition System Misfire
on 2018 BMW X5
Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2018 BMW
X5
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Important for 2018 BMW X5 Owners
Before starting repairs, verify which engine your 2018 BMW X5 has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0377 Mean on 2018 BMW X5?
A misfire detected in one or more cylinders, affecting combustion efficiency, which can cause decreased engine performance, rough idling, and decreased fuel efficiency.
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Symptoms
- • Rough idling
- • decreased engine performance
- • decreased fuel efficiency
- • engine misfires
- • and decreased power
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Common Causes
- • Faulty spark plugs
- • ignition coils
- • fuel injectors
- • vacuum leaks
- • faulty crankshaft or camshaft position sensors
- • and worn piston rings
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How to Fix P0377 on 2018 BMW X5
1. Check and replace spark plugs, ignition coils, and fuel injectors. 2. Inspect and repair vacuum leaks. 3. Check and replace crankshaft or camshaft position sensors. 4. Check and replace piston rings if worn.
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Need Maintenance Info for Your X5?
Get oil capacity, filter specs, and torque settings for your specific 2018 BMW X5.
View 2018 BMW X5 SpecsParts for 2018 BMW X5
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with P0377
P0375
Sequential Code
P0375: Ignition System Misfire
Medium
P0376
Sequential Code
P0376: Ignition System Misfire
Medium
P0378
Sequential Code
P0378: Ignition System Misfire
Medium
P0379
Sequential Code
P0379: Ignition System Misfire
Medium
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system