AutoCodes – Ford – P0135 2010 Ford Fusion

P0135 2010 Ford Fusion Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Quick Answer

During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. Common causes include Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications, Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse. 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 2010 Ford Fusion indicates O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1.
Common causes: Common causes include Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications, Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse.
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 6,644

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 Apr 22, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0135 2010 Ford Fusion Description

During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. The test fails when the current draw exceeds a calibrated limit or an open or short circuit is detected.

OBDII Code P0135 2010 Ford Fusion - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com — P0135 2010 Ford Fusion Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2010 Ford Fusion?

Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications
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 2010 Ford Fusion?

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 take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused 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 sensor and connector are OK, and there are no vacuum leaks replacing the O2 Sensor 1 usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0135 2010 Ford Fusion 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 P0135 2010 Ford Fusion Code

1. What does OBDII code P0135 on a 2010 Ford Fusion indicate?

- OBDII code P0135 indicates an O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 error.

2. What are the common symptoms of O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 in a 2010 Ford Fusion?

- Common symptoms may include poor fuel economy, rough idling, failed emissions test, and the illumination of the check engine light.

3. What are the possible causes of OBDII code P0135 on a 2010 Ford Fusion?

- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, blown fuse, or issues with the engine control module (ECM).

4. How can I diagnose the O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 issue in my 2010 Ford Fusion?

- You can use an OBDII scanner to retrieve the fault code, visually inspect the wiring and connectors, and test the oxygen sensor and related components.

5. Can I continue driving my 2010 Ford Fusion with OBDII code P0135?

- It is not recommended to continue driving with this code as it can lead to poor engine performance and potentially higher emissions.

6. How can I repair the O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 on my 2010 Ford Fusion?

- Repair may involve replacing the faulty oxygen sensor, repairing damaged wiring, checking and replacing fuses if necessary, or addressing ECM issues.

7. Will resetting the check engine light fix OBDII code P0135 on a 2010 Ford Fusion?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1.

8. How much does it typically cost to repair OBDII code P0135 on a 2010 Ford Fusion?

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

9. Can I replace the oxygen sensor myself to fix OBDII code P0135 on my 2010 Ford Fusion?

- If you have the necessary tools and experience, you can replace the oxygen sensor yourself, but it is recommended to consult a professional if you are unsure.

10. How long does it take to repair O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 on a 2010 Ford Fusion?

- The repair time can vary based on the exact cause of the issue and the skill level of the person performing the repair, but it typically takes 1-2 hours to complete.