P1165 Nissan Code - Swirl Control Valve Control Vacuum Switch
Quick Answer
The Swirl Control Valve control vacuum check switch detects vacuum signal to the swirl control valve, and sends "ON" or "OFF" signal to the Engine Control Module (ECM). Common causes include Clogged hose to Swirl control valve control vacuum check switch, Swirl Control Valve Control Solenoid Valve harness is open or shorted, Swirl Control Valve Control Solenoid Valve 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
- P1165 Nissan indicates Swirl Control Valve Control Vacuum Switch.
- Common causes
- Common causes include Clogged hose to Swirl control valve control vacuum check switch, Swirl Control Valve Control Solenoid Valve harness is open or shorted, Swirl Control Valve Control Solenoid Valve 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.
Code P1165 Nissan Description
When vacuum is supplied to the valve, the swirl control valve control vacuum check switch sends "OFF" signal to the ECM. The swirl control valve control vacuum check switch is not used to control the engine system, it is used for on board diagnosis.
What are the Possible Causes of the DTC P1165 Nissan?
- Clogged hose to Swirl control valve control vacuum check switch
- Swirl Control Valve Control Solenoid Valve harness is open or shorted
- Swirl Control Valve Control Solenoid Valve circuit poor electrical connection
- Faulty Swirl Control Valve Control Solenoid Valve
- Faulty Swirl control valve control vacuum check switch
How to Fix the DTC P1165 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1165 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.
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Information for Specific Nissan Models
- P1165 1996 Nissan Pickup — Swirl Control Valve Control Vacuum Switch
- P1165 1997 Nissan Pickup — Swirl Control Valve Control Vacuum Switch
Frequently Asked Questions about P1165 Nissan Code
What does the OBDII code P1165 mean on a Nissan?
P1165 indicates a problem with the Swirl Control Valve Control Vacuum Switch, which affects air intake dynamics for better fuel efficiency and emissions control.
What are the symptoms of code P1165 on a Nissan?
Common symptoms include reduced engine performance, rough idling, poor fuel economy, and the Check Engine Light turning on.
What causes the P1165 code on a Nissan?
Possible causes include a faulty swirl control valve, damaged vacuum hoses, wiring issues, or a malfunctioning vacuum switch.
How do I fix the P1165 code on a Nissan?
Repairs may involve replacing the swirl control valve, inspecting and repairing vacuum hoses, checking electrical connections, or replacing the vacuum switch.
Can I drive my Nissan with the P1165 code?
While the vehicle may still be drivable, driving with this code can lead to decreased fuel efficiency and potential engine performance issues.
How do I diagnose the P1165 code on a Nissan?
Diagnosing involves inspecting the swirl control valve, vacuum hoses, and vacuum switch for damage, testing for proper voltage and vacuum operation, and using a scan tool to check live data.
What vehicles commonly experience the P1165 code?
The P1165 code is often found on Nissan models such as the Altima, Maxima, Pathfinder, and other vehicles with swirl control valve systems.
Is the P1165 code related to emissions?
Yes, the swirl control valve helps optimize air intake for improved combustion and reduced emissions, so a fault can negatively affect emissions control.
How much does it cost to fix the P1165 code on a Nissan?
Repair costs can vary widely depending on the issue, ranging from $50 to $300 for parts and labor, depending on whether hoses, switches, or valves need replacement.
Can a dirty air filter cause the P1165 code?
While unlikely, a clogged air filter can indirectly affect air intake dynamics, but the code is more commonly linked to vacuum or valve issues.
Discuss the causes and fixes for P1165 Nissan OBDII Code
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After finding egr valve to replace and hopefully repair P1165 code, I pulled the hoses off egr and found coolant in the lines. I blew compressed air in one of the and the radiator bubbled inside. Blown head gasket?
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What model and year is your Nissan? are there any other symptoms besides the code?
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You found coolant inside the EGR hoses? what hoses?
Sometimes there is some built up inside hose to the swirl control valve control vacuum check switch, but that's not coolant.
If there are no other symptoms, just clean the hoses and you should be OK
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I found the antifreez in the 2 little hoses attached to the egr valve itself. I pulled one off, blew compressed air into it and the antifreeze inside the radiator bubbled.
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So the more compressed air I kept blowing into one side, the more antifreeze came out of the other.
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The 1999 Infiniti I30 uses an electronic EGR valve and the only hoses connected are coolant hoses to cool the valve. It's normal to have coolant.
The EGR valve has nothing to do with the P1165 code.
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Oh ok. So the egr valve is fine then? Swirl control valve is my next mission then.
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Please post your question here: https://www.autocodes.com/p...
I don't want to confuse another user. Thank you for your understanding.
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