AutoCodes – Hyundai – P0137 Hyundai

P0137 Hyundai Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0137 Hyundai indicates O2 Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 22,780

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0137 Hyundai Description

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P0137 Hyundai - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0137 Hyundai Code - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0137 Hyundai?

Faulty Rear Heated Oxygen Sensor Bank 1
Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0137 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Replacing the rear O2 Sensor bank 1 usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0137 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0137 Hyundai Code

1. What does the OBDII code P0137 for Hyundai mean?

- This code indicates a low voltage condition in the O2 sensor circuit of Bank 1 Sensor 2 in your Hyundai vehicle.

2. What are the common symptoms of a P0137 code in a Hyundai?

- Common symptoms include poor fuel economy, rough idle, hesitation during acceleration, and the illumination of the check engine light.

3. What are the possible causes of the P0137 code in a Hyundai?

- The P0137 code in a Hyundai can be caused by a faulty oxygen sensor, damaged wiring or connectors in the O2 sensor circuit, exhaust leaks, or a failing PCM.

4. How can I diagnose a P0137 code in my Hyundai?

- Diagnosing a P0137 code involves using an OBDII scanner to retrieve the code, inspecting the O2 sensor and its wiring for damage, and checking for exhaust leaks near the sensor.

5. How do I repair a P0137 code in my Hyundai?

- Repairing a P0137 code may involve replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, fixing any exhaust leaks, or resetting the PCM.

6. Can I drive my Hyundai with a P0137 code?

- It is not recommended to drive your Hyundai with a P0137 code for an extended period as it can lead to poor fuel efficiency and potential damage to the catalytic converter.

7. How much does it cost to repair a P0137 code in a Hyundai?

- The cost of repairing a P0137 code in a Hyundai can vary depending on the root cause of the issue, but it typically ranges from $150 to $400 for parts and labor.

8. How often does the Bank 1 Sensor 2 oxygen sensor need to be replaced in a Hyundai?

- The Bank 1 Sensor 2 oxygen sensor in a Hyundai typically lasts between 60,000 to 90,000 miles before needing replacement, but this can vary based on driving conditions.

9. Can a P0137 code be triggered by a loose gas cap in a Hyundai?

- No, a loose gas cap typically triggers a different code related to the evaporative emissions system and would not cause a P0137 code related to the O2 sensor circuit.

10. Will resetting the check engine light clear a P0137 code in a Hyundai?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P0137 code is not addressed, the code is likely to reappear.