P0135 1997 Ford F150 Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground. 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
- P0135 1997 Ford F150 indicates O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground.
- 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.
Code P0135 1997 Ford F150 Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0135 1997 Ford F150?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0135 1997 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0135 1997 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.
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Frequently Asked Questions about P0135 1997 Ford F150 Code
1. What are the common symptoms of OBDII code P0135 on a 1997 Ford F150?
- Common symptoms include poor fuel economy, rough idling, stalling, and an illuminated check engine light.
2. What does the OBDII code P0135 on a 1997 Ford F150 indicate?
- The code P0135 indicates an O2 sensor heater circuit malfunction in Bank 1 Sensor 1 of the vehicle.
3. What are the possible causes of O2 sensor heater circuit malfunction in a 1997 Ford F150?
- Possible causes include a faulty O2 sensor, damaged wiring or connectors, blown fuse, or a problem with the engine control module (ECM).
4. How can I diagnose the O2 sensor heater circuit malfunction in Bank 1 Sensor 1 of my 1997 Ford F150?
- You can use a multimeter to test the O2 sensor heater circuit for continuity, check the wiring for any damage, and inspect the O2 sensor connectors for corrosion or loose connections.
5. Can I continue driving my 1997 Ford F150 with the P0135 code?
- It is not recommended to drive your vehicle with the P0135 code as it can lead to reduced fuel efficiency and potential damage to the catalytic converter.
6. How can I repair the O2 sensor heater circuit malfunction in my 1997 Ford F150?
- The repair typically involves replacing the faulty O2 sensor, repairing damaged wiring or connectors, and resetting the check engine light with an OBDII scanner.
7. Is it easy to replace the O2 sensor on a 1997 Ford F150?
- The difficulty of replacing the O2 sensor depends on your mechanical skills and access to the necessary tools. It is recommended to consult a professional if you are unsure.
8. Can a blown fuse cause the O2 sensor heater circuit malfunction in a 1997 Ford F150?
- Yes, a blown fuse can prevent the O2 sensor heater circuit from functioning properly, triggering the P0135 code on your 1997 Ford F150.
9. How much does it cost to repair the O2 sensor heater circuit malfunction in a 1997 Ford F150?
- The cost of repairing the O2 sensor heater circuit malfunction can vary depending on the root cause of the issue, but it typically ranges from $100 to $300 for parts and labor.
10. Will resetting the check engine light eliminate the P0135 code on my 1997 Ford F150?
- Resetting the check engine light will clear the code temporarily, but if the underlying issue causing the P0135 code is not addressed, the code is likely to reappear.
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