P0170 Nissan Code - Fuel Trim Malfunction Bank 1
Quick Answer
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closer 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
- P0170 Nissan indicates Fuel Trim Malfunction 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 P0170 Nissan 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 lights up the Malfunction Indicator Light (MIL) (2 trip detection logic). The Diagnostic Trouble Code (DTC) will be set when the Fuel Injection System does not operate properly, or the amount of mixture ratio compensation is not correct.
What are the Possible Causes of the DTC P0170 Nissan?
- 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 P0170 Nissan?
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 P0170 Nissan 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 P0170 Nissan code?
Need more information on how to fix the P0170 Nissan code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0170 Nissan code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0170 Nissan Code
1. What is OBDII code P0170 for a Nissan?
- OBDII code P0170 indicates a fuel trim malfunction on Bank 1 in the Nissan's engine.
2. What are the common symptoms of a P0170 code on a Nissan?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and a noticeable decrease in overall engine performance.
3. What are the possible causes of a P0170 code on a Nissan?
- The common causes of a P0170 code in a Nissan include a vacuum leak, faulty oxygen sensor, fuel pressure issues, faulty mass airflow sensor (MAF), or a clogged fuel filter.
4. How can I diagnose a P0170 code on my Nissan?
- Diagnosing a P0170 code typically involves checking for vacuum leaks, inspecting the oxygen sensor and MAF sensor, testing fuel pressure, and ensuring proper operation of the fuel injectors.
5. How serious is a P0170 code on a Nissan?
- While a P0170 code may not cause immediate harm to the vehicle, it can lead to decreased fuel efficiency and engine performance if left unresolved. It is recommended to address the issue promptly.
6. Can I drive my Nissan with a P0170 code?
- It is generally not advisable to drive your Nissan with a P0170 code, as it can lead to further engine problems and reduced performance. It is best to have the issue diagnosed and repaired as soon as possible.
7. How can I repair a P0170 code on my Nissan?
- Repairing a P0170 code may involve fixing any vacuum leaks, replacing faulty sensors or components, cleaning or replacing the fuel filter, and resetting the engine control module (ECM) after repairs are completed.
8. Will a P0170 code on my Nissan cause the check engine light to illuminate?
- Yes, a P0170 code will trigger the check engine light to illuminate on the dashboard of your Nissan, indicating that there is an issue with the fuel trim on Bank 1.
9. How much does it cost to fix a P0170 code on a Nissan?
- The cost of fixing a P0170 code on a Nissan can vary depending on the underlying cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Can a DIY enthusiast repair a P0170 code on a Nissan?
- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address a P0170 code by following repair guides and using diagnostic tools. However, complex issues may require professional assistance.
Discuss the causes and fixes for P0170 Nissan OBDII Code
Code P0170 Nissan comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
