AutoCodes – MINI – P1135 MINI

P1135 MINI Code - O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1

Quick Answer

P1135 MINI indicates O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1. Common causes include Faulty HO2S Bank 1 Sensor 1, HO2S Bank 1 Sensor 1 harness is open or shorted, HO2S Bank 1 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: P1135 MINI indicates O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1.
Common causes: Common causes include Faulty HO2S Bank 1 Sensor 1, HO2S Bank 1 Sensor 1 harness is open or shorted, HO2S Bank 1 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 1,921

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1135 MINI Description

OBDII Code P1135 MINI - O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 - AutoCodes.com — P1135 MINI Code - O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P1135 MINI?

Faulty HO2S Bank 1 Sensor 1
HO2S Bank 1 Sensor 1 harness is open or shorted
HO2S Bank 1 Sensor 1 circuit poor electrical connection

How to Fix the DTC P1135 MINI?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1135 MINI 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 P1135 MINI 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 P1135 MINI Code

1. What are the common symptoms of OBDII code P1135 in a MINI related to the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1?

Symptoms may include rough idling, decreased fuel efficiency, engine misfires, and an illuminated check engine light.

2. What are the possible causes of OBDII code P1135 in a MINI indicating an issue with the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1?

Potential causes include a faulty O2 sensor, damaged wiring or connectors, a blown fuse, or issues with the ECM (Engine Control Module).

3. How can I diagnose the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 issue triggering code P1135 in my MINI?

Diagnosis involves using an OBDII scanner to retrieve the specific fault code, checking the sensor's wiring and connectors for damage, and testing the sensor's resistance and voltage.

4. What are the recommended repair tips for fixing OBDII code P1135 in a MINI due to the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1?

Repair tips may include replacing the faulty O2 sensor, repairing or replacing damaged wiring or connectors, ensuring proper fuse functionality, and resetting the ECM after repairs.

5. Can I continue driving my MINI with OBDII code P1135 related to the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1?

It is not recommended to drive your MINI with this issue as it can lead to decreased engine performance, increased emissions, and potential long-term damage if left unresolved.

6. How critical is it to address OBDII code P1135 indicating an O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 problem in a MINI?

Addressing this issue promptly is important to maintain optimal engine performance, fuel efficiency, and emissions compliance.

7. Is it possible to clear the OBDII code P1135 in a MINI related to the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 without fixing the underlying problem?

Clearing the code without fixing the root cause will only temporarily turn off the check engine light, but the issue will persist and may reoccur.

8. Can extreme weather conditions affect the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 operation and trigger code P1135 in a MINI?

Extreme cold or hot weather can potentially impact the O2 sensor's performance and heater circuit operation, leading to the triggering of code P1135.

9. Are there any preventive maintenance steps I can take to avoid OBDII code P1135 due to the O2 Sensor Heater Circuit issue in my MINI?

Regularly inspecting and maintaining the O2 sensor, wiring, and related components can help prevent issues that may trigger code P1135.

10. How long does it typically take to repair OBDII code P1135 related to the O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 1 in a MINI?

The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the problem.