P0137 Saturn Code - HO2S Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The P0137 diagnostic trouble code (DTC) for Saturn vehicles indicates an issue with the HO2S (Heated Oxygen Sensor) circuit on Bank 1 Sensor 2. Common causes include Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning Bank 1 Sensor 2 oxygen sensor, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can disrupt the voltage signal from the sensor, Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings. 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 Saturn indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning Bank 1 Sensor 2 oxygen sensor, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can disrupt the voltage signal from the sensor, Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0137 Saturn Description
The P0137 diagnostic trouble code (DTC) for Saturn vehicles indicates an issue with the HO2S (Heated Oxygen Sensor) circuit on Bank 1 Sensor 2. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. The purpose of this sensor is to ensure that the catalytic converter is functioning properly and to provide feedback to the engine control module (ECM) for optimal fuel delivery and emissions control.
Common Causes of P0137 Saturn
- Faulty Oxygen Sensor: The most common cause of this code is a malfunctioning Bank 1 Sensor 2 oxygen sensor.
- Wiring Issues: Corrosion, damage, or loose connections in the wiring harness can disrupt the voltage signal from the sensor.
- Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings.
- ECM Malfunction: A problem with the engine control module can also lead to issues with the oxygen sensor circuit.
- Catalytic Converter Failure: A failing catalytic converter can impact the performance of the oxygen sensor downstream.
Symptoms of P0137 Saturn
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
- Poor Fuel Economy: A malfunctioning oxygen sensor can cause the engine to run rich or lean, resulting in decreased fuel efficiency.
- Rough Idle: The engine may experience rough idling or hesitation when the oxygen sensor is not functioning properly.
- Failed Emissions Test: A faulty oxygen sensor can cause the vehicle to fail emissions tests due to increased emissions output.
- Reduced Engine Performance: The vehicle may exhibit a decrease in overall performance, including acceleration and responsiveness.
How to Fix P0137 Saturn
- Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the oxygen sensor, wiring, and exhaust system.
- Replace Oxygen Sensor: If the sensor is faulty, replace Bank 1 Sensor 2 with a new, OEM-quality part.
- Repair Wiring: Address any wiring issues by repairing or replacing damaged wires and ensuring proper connections.
- Fix Exhaust Leaks: Inspect the exhaust system for leaks and repair any damaged components to prevent interference with the oxygen sensor.
- Reset ECM: Clear the DTC and reset the ECM to ensure that the new oxygen sensor is functioning correctly.
Cost to Fix P0137 Saturn
The typical repair costs for addressing the P0137 code on a Saturn vehicle can range from $150 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable pricing. For a precise estimate, it's recommended to consult with local auto repair shops.
Tech Notes for P0137 Saturn
Need more information about the P0137 Saturn code?
Need more information on how to fix the P0137 Saturn code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0137 Saturn code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0137 Saturn Code
What does the OBDII code P0137 mean for a Saturn?
P0137 indicates a low voltage issue in the heated oxygen sensor (HO2S) circuit for Bank 1 Sensor 2, which monitors the catalytic converter's efficiency.
What are the common symptoms of code P0137 on a Saturn?
Symptoms may include poor fuel efficiency, a check engine light, rough idling, and potentially higher emissions during operation.
What causes the P0137 code on a Saturn?
Common causes include a faulty oxygen sensor, damaged wiring or connections, exhaust leaks, or an issue with the powertrain control module (PCM).
Can I drive my Saturn with a P0137 code?
While the vehicle may still be drivable, ignoring the code can lead to reduced fuel efficiency and potential damage to other components like the catalytic converter.
How do I fix the P0137 error code on my Saturn?
Repairs may include replacing the oxygen sensor, repairing damaged wiring, checking for exhaust leaks, and ensuring proper voltage at the sensor.
How can I test Bank 1 Sensor 2 for the P0137 code?
Use a multimeter to check for proper voltage and continuity in the wiring. Alternatively, use an OBDII scanner to monitor live sensor readings.
What tools do I need to diagnose P0137 on a Saturn?
An OBDII scanner, multimeter, and basic hand tools like a socket wrench are typically required for diagnostics and repair.
Is replacing the oxygen sensor guaranteed to fix code P0137?
Not always; the issue might be related to wiring, exhaust leaks, or PCM problems. Proper diagnosis is essential to identify the root cause.
How much does it cost to repair code P0137 on a Saturn?
Repair costs can range from $100 to $300 depending on whether the oxygen sensor, wiring, or other components need replacement.
Can a dirty or clogged catalytic converter trigger code P0137?
Yes, a damaged or inefficient catalytic converter can affect sensor readings and contribute to the P0137 code.
Discuss the causes and fixes for P0137 Saturn OBDII Code
Code P0137 Saturn comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.