P1140 NISSAN - Intake Valve Timing Control Performance Bank 1
P1140 NISSAN Possible Causes
- 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
First diagnose P1140 NISSAN code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
P1140 NISSAN Tech NotesSince the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code.
Cost of diagnosing the P1140 NISSAN code
Labor: 1.0The cost of diagnosing the P1140 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the P1140 NISSAN code detected?When there is a gap between angle of target and phase-control angle degree, the valve will stop working and the ECM will trigger the P1140 code.
P1140 NISSAN Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible engine lack/loss of power
- Possible engine rough idle
P1140 Nissan DescriptionThis mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.
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.
P1140 NISSAN More InformationNeed more information on how to fix the P1140 NISSAN code?
Get Access to Factory Service Manuals
P1140 Nissan Information for specific Nissan models
Need more help?Get the P1140 Nissan code diagnosed by a professional: Find a repair shop in your area
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