How to fix P0138? | Oxygen Sensor High Voltage (Bank 1, Sensor 2)

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Are you encountering the P0138 error code? 🚗⚠️ This code stands for "O2 Sensor Circuit High Voltage" for Bank 1 Sensor 2, indicating that the sensor is detecting excessive voltage, which could affect your car's emissions and performance.

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In this video, we’ll guide you through everything you need to know about P0138 and how to fix it:

🔍 What is P0138? – Understand the meaning of this error and how it impacts your vehicle.
📍 What is Bank 1 Sensor 2? – Learn the location and role of this sensor in monitoring the catalytic converter's efficiency.
⚙️ Why Does P0138 Get Triggered? – Discover common causes of high voltage in the oxygen sensor circuit.
🗺️ Where Is the P0138 Sensor Located? – Find out the exact position of Bank 1 Sensor 2 in your car.

💡 Common Root Causes of P0138:
1️⃣ Faulty Oxygen Sensor – A damaged sensor may send incorrect voltage readings.
2️⃣ Faulty Oxygen Sensor Heater Circuit – Malfunctioning heater circuits can cause sensor irregularities.
3️⃣ Defective Sensor Wiring or Circuit Problems – Issues like short circuits or loose connections can lead to high voltage.
4️⃣ Exhaust System Leaks – Leaks may disrupt sensor readings and trigger this code.

🔧 How to Fix P0138:

▶︎ Replace the faulty oxygen sensor if needed.
▶︎ Inspect and repair any damaged wiring or connectors.
▶︎ Test and fix the oxygen sensor heater circuit.
▶︎ Check and seal any exhaust leaks near the sensor.

Don’t ignore the P0138 code—fix it to keep your car running efficiently and emissions-compliant. Watch the full video for a step-by-step guide, and be sure to like, subscribe, and share for more car repair tips!
#P0138 #OxygenSensor #CarRepair #checkenginelight

Chapters:
00:00 - Intro
00:12 - What is P0138?
00:39 - What is Bank 1- Sensor 2?
01:37 - What triggers P0138?
02:32 - Where is the P0138 sensor located?
03:06 - How to Reset P0138?
03:50 - Possible Root causes of P0138