P0172 2017 Honda CR-V Code - Fuel System Too Rich Bank 1
Quick Answer
The Powertrain Control Module (PCM) detects the oxygen content in the exhaust gas from the Air/Fuel Ratio (A/F) Sensor (Sensor 1) signal voltage, and it uses fuel feedback control to maintain the optimal air/fuel ratio. Common causes include Faulty Fuel Pump, Faulty Fuel Injector, Fuel Pressure Regulator. 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
- P0172 2017 Honda CR-V indicates Fuel System Too Rich Bank 1.
- Common causes
- Common causes include Faulty Fuel Pump, Faulty Fuel Injector, Fuel Pressure Regulator.
- 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.
Code P0172 2017 Honda CR-V Description
What are the Possible Causes of the DTC P0172 2017 Honda CR-V?
- Faulty Fuel Pump
- Faulty Fuel Injector
- Fuel Pressure Regulator
- Fuel line failure
- Fuel supply system failure
- Faulty Mass Air Flow (MAF) Sensor
- Faulty Manifold Absolute Pressure (MAP) Sensor
- Faulty A/F Sensor (Sensor 1)
- Faulty Secondary HO2S (Sensor 2)
- Vacuum hose mis installed
- Throttle body air leak
- Intake manifold air leak
- Faulty EVAP Canister Purge Valve
How to Fix the DTC P0172 2017 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 P0172 2017 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 P0172 2017 Honda CR-V code?
Need more information on how to fix the P0172 2017 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0172 2017 Honda CR-V code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0172 2017 Honda CR-V Code
1. What does the OBDII code P0172 mean on a 2017 Honda CR-V?
P0172 indicates that the engine control module (ECM) has detected the air-fuel mixture is too rich on Bank 1, meaning there is too much fuel or insufficient air in the combustion process.
2. What are the common symptoms of code P0172 in a 2017 Honda CR-V?
Symptoms include poor fuel economy, black smoke from the exhaust, rough idling, difficulty starting, and possible loss of engine power.
3. What causes the P0172 code to trigger on a 2017 Honda CR-V?
Common causes include a dirty or faulty mass airflow sensor (MAF), a leaking fuel injector, a faulty oxygen sensor, a clogged air filter, excessive fuel pressure, or a malfunctioning ECM.
4. Can a dirty air filter cause a P0172 code on my 2017 Honda CR-V?
Yes, a clogged or dirty air filter can restrict airflow to the engine, leading to a rich air-fuel mixture and triggering the P0172 code.
5. How can a faulty oxygen sensor cause the P0172 code on a 2017 Honda CR-V?
A faulty oxygen sensor may send incorrect readings to the ECM, causing it to add too much fuel to the mixture, resulting in a rich condition.
6. Is it safe to drive with the P0172 code on a 2017 Honda CR-V?
While the car might still run, driving with a P0172 code can lead to reduced fuel efficiency, potential engine damage, or damage to the catalytic converter if not addressed promptly.
7. What is the first step in diagnosing a P0172 code on a 2017 Honda CR-V?
Start by checking the air filter, examining the mass airflow sensor, and inspecting the fuel injectors for leaks. Use a scan tool to monitor oxygen sensor and fuel trim readings.
8. How can a leaking fuel injector cause the P0172 code on a 2017 Honda CR-V?
A leaking fuel injector can allow excess fuel into the combustion chamber, creating a rich condition and triggering the P0172 code.
9. Will cleaning the mass airflow sensor fix the P0172 code on my 2017 Honda CR-V?
If the mass airflow sensor is dirty or contaminated, cleaning it may resolve the issue. However, if the sensor is faulty, it will need to be replaced.
10. How much does it cost to repair a P0172 code on a 2017 Honda CR-V?
The repair cost varies depending on the root cause. Cleaning an air filter or MAF sensor may cost under $50, while replacing parts like oxygen sensors, injectors, or the MAF sensor can range from $100 to $500, plus labor.
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