AutoCodes – Ford – P0158 1998 Ford F150

P0158 1998 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 1998 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 2,758

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 1998 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 1998 Ford F150 - O2 Sensor Circuit High Voltage Bank 2 Sensor 2 - AutoCodes.com — P0158 1998 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 1998 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 1998 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 1998 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 1998 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 1998 Ford F150 Code

1. What are the common symptoms of OBDII code P0158 on a 1998 Ford F150?

- Common symptoms include poor fuel economy, rough idling, engine misfires, and the illuminated Check Engine Light.

2. What does the OBDII code P0158 for a 1998 Ford F150 indicate?

- The code indicates an issue with the O2 sensor circuit high voltage for Bank 2 Sensor 2, which is typically the rear sensor after the catalytic converter on the passenger side.

3. What are the possible causes of OBDII code P0158 on a 1998 Ford F150?

- The common causes include a faulty O2 sensor, damaged wiring or connectors in the O2 sensor circuit, exhaust leaks, or a malfunctioning engine control module (ECM).

4. How can I diagnose the O2 sensor circuit high voltage issue on Bank 2 Sensor 2 of a 1998 Ford F150?

- Use a multimeter to test the voltage output of the O2 sensor, visually inspect the wiring and connectors for damage, and check for exhaust leaks near the sensor.

5. Can I drive my 1998 Ford F150 with the OBDII code P0158 active?

- It is not recommended to drive the vehicle with an active P0158 code as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

6. How can I repair the O2 sensor circuit high voltage issue on Bank 2 Sensor 2 of a 1998 Ford F150?

- Depending on the root cause, the repair may involve replacing the O2 sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or reprogramming the ECM.

7. Is resetting the Check Engine Light after fixing the OBDII code P0158 sufficient?

- After fixing the issue, it is recommended to clear the trouble codes using an OBDII scanner to reset the Check Engine Light and ensure the problem is resolved.

8. How often should the O2 sensors be replaced in a 1998 Ford F150 to prevent OBDII code P0158?

- O2 sensors typically last between 50,000 to 100,000 miles, but it's advisable to follow the manufacturer's recommendations for sensor replacement intervals.

9. Can a dirty air filter cause OBDII code P0158 on a 1998 Ford F150?

- While a dirty air filter does not directly cause P0158, it can affect engine performance and fuel efficiency, potentially leading to issues that trigger the code.

10. Will disconnecting the battery reset the OBDII code P0158 on a 1998 Ford F150?

- Disconnecting the battery may temporarily clear the code, but it is not a proper repair method. It is recommended to diagnose and fix the underlying issue to prevent the code from reoccurring.