AutoCodes – Pontiac – P0059 Pontiac

P0059 Pontiac Code - HO2S Heater Resistance Bank 2 Sensor 1

Quick Answer

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 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: P0059 Pontiac indicates HO2S Heater Resistance Bank 2 Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1, Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 2 Sensor 1 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 840

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0059 Pontiac Description

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach an operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Engine Control Module (ECM). The ECM uses Pulse Width Modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects the HO2S heater is not within a specified resistance range at engine start-up.

OBDII Code P0059 Pontiac - HO2S Heater Resistance Bank 2 Sensor 1 - AutoCodes.com — P0059 Pontiac Code - HO2S Heater Resistance Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0059 Pontiac?

Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
Heated Oxygen Sensor Bank 2 Sensor 1 harness is open shorted
Heated Oxygen Sensor Bank 2 Sensor 1 circuit poor electrical connection
Heated Oxygen Sensor Bank 2 Sensor 1 circuit fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0059 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 does this mean?

Code Tech Notes

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it takes the sensor to warm up and start sending an adequate signal. The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0059 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 P0059 Pontiac Code

1. What are the common symptoms of OBDII code P0059 in a Pontiac related to HO2S Heater Resistance Bank 2 Sensor 1?

- Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0059 in a Pontiac for HO2S Heater Resistance Bank 2 Sensor 1?

- The code may be triggered by a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a problem with the engine control module.

3. How can I diagnose OBDII code P0059 in my Pontiac related to HO2S Heater Resistance Bank 2 Sensor 1?

- Diagnose the code by using an OBDII scanner to retrieve the specific fault code, inspecting the oxygen sensor and related components for damage, and testing the sensor's resistance.

4. Can I drive my Pontiac with OBDII code P0059 for HO2S Heater Resistance Bank 2 Sensor 1?

- It is not recommended to drive your Pontiac with this code active, as it can lead to further engine damage and decreased fuel efficiency.

5. How do I repair OBDII code P0059 in my Pontiac for HO2S Heater Resistance Bank 2 Sensor 1?

- Repair options include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, replacing blown fuses, or reprogramming the engine control module.

6. Does OBDII code P0059 in a Pontiac related to HO2S Heater Resistance Bank 2 Sensor 1 affect emissions?

- Yes, this code can affect emissions by causing the vehicle to run inefficiently, leading to increased emissions output.

7. How long does it take to repair OBDII code P0059 in a Pontiac for HO2S Heater Resistance Bank 2 Sensor 1?

- The repair time can vary depending on the exact cause of the code, but it typically takes 1-2 hours for a professional mechanic to diagnose and fix the issue.

8. Can a DIY enthusiast repair OBDII code P0059 in a Pontiac related to HO2S Heater Resistance Bank 2 Sensor 1?

- Yes, a DIY enthusiast with the necessary tools and knowledge can attempt to repair this code, but it is recommended to consult a repair manual or seek professional help if unsure.

9. Will resetting the check engine light resolve OBDII code P0059 in my Pontiac for HO2S Heater Resistance Bank 2 Sensor 1?

- Resetting the check engine light may temporarily turn it off, but the underlying issue causing the code will remain unresolved and may trigger the light to come back on.

10. What is the purpose of the HO2S Heater in Bank 2 Sensor 1 in a Pontiac, and why is it important for vehicle operation?

- The HO2S Heater in Bank 2 Sensor 1 is responsible for heating the oxygen sensor quickly to enable accurate and efficient engine operation, fuel economy, and emissions control.