← View Generic P0139 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2017 Toyota CAMRY
P0139: Oxygen Sensor Circuit Slow Response Bank 1 Sensor 2
on 2017 Toyota CAMRY
Fix Cost
$50 - $250
Parts & Labor
Difficulty
2/5
30 mins - 1 hour
DIY Possible?
✅ Yes
Save money
Your Vehicle
2017 Toyota
CAMRY
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Important for 2017 Toyota CAMRY Owners
Before starting repairs, verify which engine your 2017 Toyota CAMRY has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0139 Mean on 2017 Toyota CAMRY?
The downstream oxygen sensor on bank 1 is responding too slowly to exhaust changes.
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Symptoms
- • Failed emissions test
- • check engine light
- • poor catalytic converter monitoring.
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Common Causes
- • Aging oxygen sensor
- • contaminated sensor
- • exhaust leaks
- • poor sensor connections.
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How to Fix P0139 on 2017 Toyota CAMRY
Replace oxygen sensor, repair exhaust leaks, clean sensor connections, check sensor ground.
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Need Maintenance Info for Your CAMRY?
Get oil capacity, filter specs, and torque settings for your specific 2017 Toyota CAMRY.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with P0139
P0137
Sequential Code
Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Medium
P0138
Sequential Code
Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2
Medium
P0140
Sequential Code
Oxygen Sensor Circuit No Activity Bank 1 Sensor 2
Medium
P0141
Sequential Code
Oxygen Sensor Heater Circuit Malfunction 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