AutoCodes – Suzuki – P1166 Suzuki

P1166 Suzuki Code - HO2S Circuit Low Voltage During Power Enrichment Sensor 1

Quick Answer

P1166 Suzuki indicates HO2S Circuit Low Voltage During Power Enrichment Sensor 1. Common causes include Faulty Heated Oxygen Sensor 1, Heated Oxygen Sensor 1 harness is open or shorted, Heated Oxygen 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: P1166 Suzuki indicates HO2S Circuit Low Voltage During Power Enrichment Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor 1, Heated Oxygen Sensor 1 harness is open or shorted, Heated Oxygen 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 4,579

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 May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1166 Suzuki Description

OBDII Code P1166 Suzuki - HO2S Circuit Low Voltage During Power Enrichment Sensor 1 - AutoCodes.com — P1166 Suzuki Code - HO2S Circuit Low Voltage During Power Enrichment Sensor 1

What does this mean?

What are the Possible Causes of the DTC P1166 Suzuki?

Faulty Heated Oxygen Sensor 1
Heated Oxygen Sensor 1 harness is open or shorted
Heated Oxygen Sensor 1 circuit poor electrical connection

How to Fix the DTC P1166 Suzuki?

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 P1166 Suzuki 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 P1166 Suzuki code?

Need more information on how to fix the P1166 Suzuki code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1166 Suzuki code diagnosed by a professional: Find a repair shop in your area

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 P1166 Suzuki Code

1. What are the common symptoms of OBDII code P1166 in a Suzuki related to the HO2S circuit low voltage during power enrichment sensor 1?

- Common symptoms include engine hesitation, rough idling, decreased fuel efficiency, and potentially a noticeable lack of power.

2. What are the typical causes of the P1166 Suzuki trouble code indicating low voltage in the HO2S circuit during power enrichment sensor 1?

- Potential causes may include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, a defective powertrain control module (PCM), or issues with the fuel system.

3. How can I diagnose the P1166 code in my Suzuki related to the HO2S circuit low voltage during power enrichment sensor 1?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the oxygen sensor and related wiring for damage, and testing the sensor's voltage output during power enrichment conditions.

4. Can driving with the P1166 code in a Suzuki be harmful to the vehicle?

- Continuing to drive with this code may result in decreased fuel efficiency, potential engine damage over time, and an overall reduction in performance. It is recommended to address the issue promptly.

5. What are some repair tips for resolving the P1166 Suzuki trouble code associated with the HO2S circuit low voltage during power enrichment sensor 1?

- Repair tips may include replacing the oxygen sensor, repairing any damaged wiring or connectors, resetting the PCM after repairs, and conducting a thorough inspection of the fuel system.

6. Is it possible to clear the P1166 OBDII code in a Suzuki without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent further issues and potential damage to the vehicle.

7. How much does it typically cost to repair the P1166 code related to the HO2S circuit low voltage during power enrichment sensor 1 in a Suzuki?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts such as the oxygen sensor and potential labor costs for diagnosis and replacement.

8. Can a DIY enthusiast fix the P1166 Suzuki trouble code themselves?

- Depending on your automotive repair skills and access to tools, you may be able to address this code yourself by following repair guides, but professional assistance is recommended for accurate diagnosis and repair.

9. Will the P1166 code in a Suzuki cause the check engine light to illuminate?

- Yes, the P1166 OBDII code is likely to trigger the check engine light in your Suzuki, signaling that there is an issue with the HO2S circuit low voltage during power enrichment sensor 1 that requires attention.

10. How urgent is it to address the P1166 trouble code in a Suzuki?

- It is advisable to address the P1166 code promptly to prevent potential damage to the engine, ensure optimal fuel efficiency, and maintain overall performance and drivability of the vehicle.