P0171 Land Rover Code - System Too Lean Bank 1
Quick Answer
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring. 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 Land Rover indicates System Too Lean Bank 1.
- Common causes
- Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring.
- 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 Land Rover Description
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the Malfunction Indicator Light (MIL) (2 trip detection logic).
What are the Possible Causes of the DTC P0171 Land Rover?
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
How to Fix the DTC P0171 Land Rover?
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 Land Rover 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.
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Frequently Asked Questions about P0171 Land Rover Code
1. What does the OBDII code P0171 for a Land Rover mean?
The code P0171 indicates a "System Too Lean Bank 1" condition, which means that the engine is receiving too much air and not enough fuel.
2. What are the common symptoms of OBDII code P0171 in a Land Rover?
Common symptoms of code P0171 include rough idling, poor acceleration, decreased fuel efficiency, and potential stalling.
3. What are the possible causes of the OBDII code P0171 in a Land Rover?
Some common causes of code P0171 in a Land Rover include a vacuum leak, faulty oxygen sensor, clogged fuel filter, dirty MAF sensor, or a malfunctioning fuel injector.
4. How can I diagnose the OBDII code P0171 in my Land Rover?
To diagnose code P0171, you can perform a visual inspection for leaks, check the oxygen sensor readings, test the fuel pressure, inspect the MAF sensor, and scan for any other related trouble codes.
5. How can I repair the OBDII code P0171 in my Land Rover?
Repairing code P0171 may involve fixing any vacuum leaks, replacing a faulty oxygen sensor, cleaning or replacing the MAF sensor, changing the fuel filter, or addressing any other identified issues causing the lean condition.
6. Can driving with the OBDII code P0171 in my Land Rover cause further damage?
Continuing to drive with code P0171 can potentially cause damage to the engine over time due to the lean fuel mixture affecting combustion and engine performance.
7. Will resetting the OBDII code P0171 in my Land Rover make it go away permanently?
Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing code P0171 is not addressed, the code is likely to return.
8. How much does it typically cost to repair the OBDII code P0171 in a Land Rover?
The cost of repairing code P0171 in a Land Rover can vary widely depending on the specific cause of the lean condition and the parts or components that need to be replaced. Costs can range from relatively minor to more significant repairs.
9. Can I continue driving my Land Rover with the OBDII code P0171 if the symptoms are mild?
It is not recommended to ignore code P0171 even if the symptoms are mild, as the underlying issue can worsen over time and potentially lead to more severe engine problems.
10. How often should I have my Land Rover checked for potential issues related to the OBDII code P0171?
It is advisable to have your Land Rover regularly serviced and inspected by a qualified mechanic to address any potential issues, including those related to code P0171, before they escalate into more significant problems.
Discuss the causes and fixes for P0171 Land Rover OBDII Code
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I've changed the O2 sensor of which i had a code for bad heater circuit. P0135 Have no intake leaks,so next on the list is to change air filter and clean mass air sensor.
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Hi Tracy - did that work for you? Did spark plugs have anything to do with your repair? I know it's been a while. Thanks!
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