← View Generic P0498 Guide
Severity: Medium
🚗
Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P0498: Evaporative Emission Control System Vent Valve Control Circuit Low
on 2021 Honda PASSPORT
Fix Cost
$50 - $350
Parts & Labor
Difficulty
3/5
1-3 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2021 Honda
PASSPORT
⚠️
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 P0498 Mean on 2021 Honda PASSPORT?
The EVAP vent valve control circuit has low voltage preventing proper valve operation.
⚠️
Symptoms
- • Check engine light
- • EVAP vent valve may not close properly
- • failed emissions test.
🔍
Common Causes
- • Wiring short to ground in vent valve circuit
- • faulty vent valve
- • poor connections
- • ECM driver circuit problem.
🛠️
How to Fix P0498 on 2021 Honda PASSPORT
Repair wiring short to ground, replace vent valve, clean connections, test ECM vent valve driver.
🔧
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
🔗
Related Diagnostic Codes
Other codes that may appear with P0498
P0496
Sequential Code
P0496: Emissions Control System Not Operating Within Normal Parameters
Medium
P0497
Sequential Code
P0497: Emissions Control System Not Operating Within Normal Parameters
Medium
P0499
Sequential Code
Evaporative Emission Control System Vent Valve Control Circuit High
Medium
P0500
Sequential Code
Vehicle Speed Sensor Malfunction
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