P1140 2002 Nissan Sentra Code - Intake Valve Timing Control Performance Bank 1
Quick Answer
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 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
- P1140 2002 Nissan Sentra indicates Intake Valve Timing Control Performance Bank 1.
- Common causes
- Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 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 P1140 2002 Nissan Sentra Description
The Engine Control Module (ECM) receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.
What are the Possible Causes of the DTC P1140 2002 Nissan Sentra?
- Faulty Intake Valve Timing Control Solenoid Valve Bank 1
- Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted
- Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection
- Faulty Crankshaft Position Sensor
- Faulty Camshaft Position Sensor
How to Fix the DTC P1140 2002 Nissan Sentra?
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 P1140 2002 Nissan Sentra 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 P1140 2002 Nissan Sentra Code
1. What are the common symptoms of OBDII code P1140 in a 2002 Nissan Sentra?
- Common symptoms include rough idling, decreased engine performance, and potential stalling issues.
2. What does the OBDII code P1140 on a 2002 Nissan Sentra indicate?
- OBDII code P1140 signifies an issue with the Intake Valve Timing Control on Bank 1 of the vehicle's engine.
3. What are the possible causes of OBDII code P1140 in a 2002 Nissan Sentra?
- Causes can include a faulty Intake Valve Timing Control Solenoid, damaged wiring, low engine oil levels, or issues with the timing chain.
4. How can I diagnose the OBDII code P1140 on my 2002 Nissan Sentra?
- Diagnosing this code typically involves checking the Intake Valve Timing Control Solenoid, inspecting wiring connections, and verifying oil levels.
5. Can I continue driving my 2002 Nissan Sentra with OBDII code P1140?
- It is not recommended to drive the vehicle with this code active, as it can lead to further engine damage if left unresolved.
6. Is it safe to reset the OBDII code P1140 in my 2002 Nissan Sentra without addressing the underlying issue?
- Resetting the code without fixing the root cause can temporarily clear the warning light but will not solve the underlying problem.
7. What are the repair options for OBDII code P1140 in a 2002 Nissan Sentra?
- Repair options may include replacing the Intake Valve Timing Control Solenoid, repairing damaged wiring, checking and replenishing engine oil, or addressing timing chain issues.
8. How much does it cost to fix OBDII code P1140 in a 2002 Nissan Sentra?
- The cost of repairs can vary based on the specific cause of the issue, but it is recommended to consult a mechanic for a proper diagnosis and cost estimate.
9. Can a DIY enthusiast fix OBDII code P1140 in a 2002 Nissan Sentra?
- Depending on the level of expertise, some DIY enthusiasts may be able to address simpler causes like checking wiring connections, but more complex issues may require professional assistance.
10. How can I prevent OBDII code P1140 from occurring in my 2002 Nissan Sentra in the future?
- Regular maintenance, timely oil changes, and addressing any engine performance issues promptly can help prevent the recurrence of OBDII code P1140.
Discuss the causes and fixes for P1140 2002 Nissan Sentra OBDII Code
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Have a problem can't I get past, 02 Sentra p1140 variable valve timing solenoid I replaced with new part and still have same code could I have a bad relay or where does the the part get power from I know in an article I seen here says ecm but would there be a relay, also where r the other sensors located meaning cam shaft sen.and crankshaft sen,one more question is valve position sensor same as any above mentioned sen.
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Sometimes the problem is the Camshaft Position Sensor that is no properly reading the camshaft position. The sensor is in front of the engine for the 1.8L engine
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