AutoCodes – Ford – P0158 2002 Ford F150

P0158 2002 Ford F150 Code - O2 Sensor Circuit High Voltage Bank 2 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 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 2 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: P0158 2002 Ford F150 indicates O2 Sensor Circuit High Voltage Bank 2 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 2 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 3,209

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
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0158 2002 Ford F150 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 P0158 2002 Ford F150 - O2 Sensor Circuit High Voltage Bank 2 Sensor 2 - AutoCodes.com — P0158 2002 Ford F150 Code - O2 Sensor Circuit High Voltage Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0158 2002 Ford F150?

Faulty Rear Heated Oxygen Sensor Bank 2
Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks
Exhaust gas leaks

How to Fix the DTC P0158 2002 Ford F150?

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 Heated Oxygen Sensor Bank 2 usually takes care of the problem.
The HO2S Sensor Signals are monitored for an over voltage fault. The code is set when HO2S signal voltage is 1.5 volts or greater.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0158 2002 Ford F150 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.

Need more information about the P0158 2002 Ford F150 code?

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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 P0158 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P0158 on a 2002 Ford F150?

- Common symptoms include poor fuel economy, rough idling, stalling, and the illumination of the Check Engine Light.

2. What does the OBDII code P0158 "O2 Sensor Circuit High Voltage Bank 2 Sensor 2" mean for a 2002 Ford F150?

- This code indicates that the oxygen sensor located after the catalytic converter on bank 2 sensor 2 is detecting a high voltage signal.

3. What are the possible causes of OBDII code P0158 on a 2002 Ford F150?

- Possible causes include a faulty oxygen sensor, wiring issues, exhaust leaks, engine misfires, or a malfunctioning catalytic converter.

4. How can I diagnose the O2 sensor circuit high voltage issue on Bank 2 Sensor 2 in my 2002 Ford F150?

- You can diagnose the issue by checking the wiring connections, inspecting the sensor for damage, scanning for other trouble codes, and performing voltage tests.

5. Can I continue driving my 2002 Ford F150 with the OBDII code P0158 active?

- It is not recommended to continue driving with this code active as it can lead to decreased fuel efficiency and potentially cause damage to the catalytic converter.

6. Are there any DIY repair tips for fixing the O2 sensor circuit high voltage issue on Bank 2 Sensor 2 in a 2002 Ford F150?

- DIY repair tips include checking and cleaning the sensor connections, inspecting for visible damage, and ensuring there are no exhaust leaks affecting the sensor.

7. How much does it typically cost to repair the OBDII code P0158 on a 2002 Ford F150?

- The cost of repairing this code can vary depending on the exact cause, but it may range from $100 to $300 for parts and labor.

8. Can a faulty oxygen sensor cause the OBDII code P0158 on a 2002 Ford F150?

- Yes, a faulty oxygen sensor on Bank 2 Sensor 2 can trigger the high voltage reading and result in the P0158 trouble code.

9. Will resetting the Check Engine Light clear the OBDII code P0158 on a 2002 Ford F150?

- Resetting the Check Engine Light may temporarily turn it off, but the underlying issue causing the P0158 code will need to be addressed to prevent it from reoccurring.

10. How important is it to fix the O2 sensor circuit high voltage issue on Bank 2 Sensor 2 in a 2002 Ford F150?

- It is important to address this issue promptly to ensure optimal engine performance, fuel efficiency, and to prevent potential damage to the catalytic converter.