← View Generic P0137 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P0137: Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
on 2021 Honda PASSPORT
Fix Cost
$50 - $250
Parts & Labor
Difficulty
2/5
30 mins - 1 hour
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 P0137 Mean on 2021 Honda PASSPORT?
The downstream oxygen sensor on bank 1 is reading consistently low voltage.
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Symptoms
- • Failed emissions test
- • check engine light
- • possible catalytic converter efficiency issues.
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Common Causes
- • Faulty oxygen sensor
- • exhaust leaks
- • wiring short to ground
- • contaminated sensor
- • catalytic converter problems.
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How to Fix P0137 on 2021 Honda PASSPORT
Replace oxygen sensor, repair exhaust leaks, check wiring for shorts, inspect catalytic converter.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
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Related Diagnostic Codes
Other codes that may appear with P0137
P0135
Sequential Code
Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1
Medium
P0136
Sequential Code
Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
Medium
P0138
Sequential Code
Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2
Medium
P0139
Sequential Code
Oxygen Sensor Circuit Slow Response Bank 1 Sensor 2
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