P0171 2020 Honda CR-V Code - Fuel Injection System Too Lean 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
- P0171 2020 Honda CR-V indicates Fuel Injection System Too Lean 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 P0171 2020 Honda CR-V Description
What are the Possible Causes of the DTC P0171 2020 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 P0171 2020 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0171 2020 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 P0171 2020 Honda CR-V code?
Need more information on how to fix the P0171 2020 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0171 2020 Honda CR-V Code
1. What does OBDII code P0171 mean for my 2020 Honda CR-V?
This code indicates that the fuel injection system on Bank 1 is running too lean, meaning there is an imbalance of air and fuel mixture in that bank of cylinders.
2. What are the common symptoms of OBDII code P0171 in a 2020 Honda CR-V?
Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
3. What are the possible causes of OBDII code P0171 in a 2020 Honda CR-V?
Common causes include a vacuum leak, faulty oxygen sensor, dirty or clogged fuel injectors, a malfunctioning mass airflow sensor, or a problem with the fuel pressure regulator.
4. How can I diagnose the cause of OBDII code P0171 in my 2020 Honda CR-V?
Diagnosis often involves checking for vacuum leaks, inspecting the oxygen sensor, cleaning or replacing fuel injectors, testing the mass airflow sensor, and verifying the fuel pressure regulator's operation.
5. Is it safe to continue driving my 2020 Honda CR-V with OBDII code P0171?
It is not recommended to drive extensively with this code unresolved, as it can lead to potential engine damage and reduced performance over time. Seek diagnosis and repair promptly.
6. Can I fix OBDII code P0171 on my 2020 Honda CR-V myself?
Depending on your skill level and access to tools, some DIY repairs are possible, such as replacing the oxygen sensor or cleaning the mass airflow sensor. However, more complex issues may require professional assistance.
7. How much does it typically cost to repair OBDII code P0171 on a 2020 Honda CR-V?
Costs can vary widely depending on the specific cause of the lean condition. Simple fixes like replacing an oxygen sensor may cost a couple of hundred dollars, while more involved repairs could reach into the thousands.
8. Will resetting the check engine light resolve OBDII code P0171 on my 2020 Honda CR-V?
Resetting the check engine light may temporarily turn it off, but if the underlying issue causing the lean condition is not addressed, the code is likely to reappear after some driving cycles.
9. How urgent is it to address OBDII code P0171 in my 2020 Honda CR-V?
While the vehicle may still be driveable with this code present, it is advisable to address it promptly to prevent potential damage to the engine and ensure optimal performance and fuel efficiency.
10. Can extreme weather conditions affect OBDII code P0171 in a 2020 Honda CR-V?
Extreme weather conditions can exacerbate existing issues related to a lean air-fuel mixture, so it's important to address any potential causes promptly, especially during temperature extremes.
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