AutoCodes – Honda – P1172 2016 Honda CR-V

P1172 2016 Honda CR-V Code - Air Fuel Ratio Sensor Circuit Out of Range High

Quick Answer

The Air/Fuel Ratio (A/F) Sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. Common causes include Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 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: P1172 2016 Honda CR-V indicates Air Fuel Ratio Sensor Circuit Out of Range High.
Common causes: Common causes include Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1, Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 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 40

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 Sep 02, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1172 2016 Honda CR-V Description

The Air/Fuel Ratio (A/F) Sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. The A/F sensor transmits output voltage to the Powertrain Control Module (PCM). If a malfunction causes the A/F Sensor (Sensor 1) signal to the PCM to deviate from the normal control area, the A/F Sensor (Sensor 1) may still become active after the engine starts, but the air/fuel feedback does not start normally, and the emissions deteriorate. When the A/F Sensor (Sensor 1) output is out of the normal area, and this condition continues after the A/F Sensor (Sensor 1) is active, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P1172 2016 Honda CR-V - Air Fuel Ratio Sensor Circuit Out of Range High - AutoCodes.com — P1172 2016 Honda CR-V Code - Air Fuel Ratio Sensor Circuit Out of Range High

What does this mean?

What are the Possible Causes of the DTC P1172 2016 Honda CR-V?

Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1
Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted
Air/Fuel Ratio Sensor Bank 1 Sensor 1 circuit poor electrical connection

How to Fix the DTC P1172 2016 Honda CR-V?

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 P1172 2016 Honda CR-V 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 P1172 2016 Honda CR-V 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.