AutoCodes – Pontiac – P1137 Pontiac

P1137 Pontiac Code - HO2S Bank 1 Sensor 2 Lean Or Low Voltage

Quick Answer

In order to control emissions, a catalytic converter converts any harmful exhaust emissions into harmless water vapor and carbon dioxide. Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1137 Pontiac indicates HO2S Bank 1 Sensor 2 Lean Or Low Voltage.
Common causes: Common causes include Faulty HO2S Bank 1 Sensor 2, HO2S Bank 1 Sensor 2 harness is open or shorted, HO2S Bank 1 Sensor 2 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,839

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Jul 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1137 Pontiac Description

In order to control emissions, a catalytic converter converts any harmful exhaust emissions into harmless water vapor and carbon dioxide. The Powertrain Control Module (PCM) can monitor this process by using a rear Heated Oxygen Sensor 2 (HO2S 2). The HO2S 2, located in the exhaust stream past the catalytic converter, produces an output signal which indicates the storage capacity of the catalyst. This signal indicates the catalyst's ability to effectively convert the exhaust emissions. If the catalyst is functioning properly, the HO2S 2 signal will be far less active than the signal produced by the front Heated Oxygen Sensor 1 (HO2S 1).

OBDII Code P1137 Pontiac - HO2S Bank 1 Sensor 2 Lean Or Low Voltage - AutoCodes.com — P1137 Pontiac Code - HO2S Bank 1 Sensor 2 Lean Or Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1137 Pontiac?

Faulty HO2S Bank 1 Sensor 2
HO2S Bank 1 Sensor 2 harness is open or shorted
HO2S Bank 1 Sensor 2 circuit poor electrical connection

How to Fix the DTC P1137 Pontiac?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1137 Pontiac 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 P1137 Pontiac Code

1. What does the OBDII code P1137 mean for a Pontiac?

P1137 indicates that the downstream oxygen sensor (Bank 1, Sensor 2) is detecting a lean condition or low voltage output, which may affect the vehicle's emissions and efficiency.

2. What are the common symptoms of a P1137 code in a Pontiac?

Symptoms may include the check engine light turning on, reduced fuel efficiency, rough idling, poor engine performance, or failed emissions testing.

3. What causes the P1137 code to appear on a Pontiac?

Possible causes include a faulty oxygen sensor, exhaust leaks, damaged wiring or connectors, fuel system issues, or a malfunctioning catalytic converter.

4. Which oxygen sensor is involved in the P1137 code?

The P1137 code refers to the downstream oxygen sensor (Sensor 2) on Bank 1, which monitors the efficiency of the catalytic converter.

5. Can I drive my Pontiac with a P1137 code?

While it may be possible to drive with this code, it's not recommended as it could lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the catalytic converter.

6. How do I diagnose the P1137 code on my Pontiac?

Start by inspecting the wiring and connectors for the downstream oxygen sensor, checking for exhaust leaks, and testing the sensor's voltage output. A scan tool can also help assess live data and identify related issues.

7. How do I fix the P1137 code on a Pontiac?

Common fixes include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing any underlying fuel system or catalytic converter problems.

8. How much does it cost to repair a P1137 code on a Pontiac?

The cost can vary, but replacing a downstream oxygen sensor typically ranges from $150 to $300, including parts and labor. Additional repairs, such as fixing exhaust leaks, may increase the cost.

9. Can a bad catalytic converter trigger a P1137 code?

Yes, a malfunctioning catalytic converter can cause the downstream oxygen sensor to detect improper exhaust gas levels, triggering the P1137 code.

10. Will clearing the P1137 code solve the problem?

Clearing the code may turn off the check engine light temporarily, but it won't fix the underlying issue. Proper diagnosis and repair are needed to resolve the problem fully.