← View Generic P0338 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P0338: P0338: Ignition System Misfire
on 2021 Honda PASSPORT
Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2021 Honda
PASSPORT
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Important for 2021 Honda PASSPORT Owners
Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0338 Mean on 2021 Honda PASSPORT?
A misfire detected in one or more cylinders, 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
- • spark plug wires
- • fuel injectors
- • or vacuum leaks
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How to Fix P0338 on 2021 Honda PASSPORT
1. Check and replace spark plugs, ignition coils, and spark plug wires. 2. Check and clean fuel injectors. 3. Check for vacuum leaks and repair if necessary.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
View 2021 Honda PASSPORT SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with P0338
P0336
Sequential Code
P0336: Ignition System Misfire
Medium
P0337
Sequential Code
P0337: Ignition System Misfire
Medium
P0339
Sequential Code
P0339: Ignition System Misfire
Medium
P0340
Sequential Code
Camshaft Position Sensor Circuit Malfunction
High
💡 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