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P1140

Intake Valve Timing Control Position Sensor Bank 1

2007-2012 Nissan Altima 2.5L I4

Moderate SeverityPowertrain

Description

Fault in VTC position sensor monitoring actual camshaft position.

Symptoms

  • CEL
  • Rough idle
  • Poor performance at certain RPM ranges

Common Causes

  • Faulty CMP sensor
  • Damaged wiring
  • Oil contamination
  • Timing chain stretch

Diagnostic Steps

  1. Test sensor output
  2. Inspect wiring
  3. Check oil condition
  4. Monitor cam position

Repair Notes

Replace CMP sensor.

Other Powertrain Codes

P1140 on Other Vehicles

Common Questions

What does code P1140 mean on a 2007-2012 Nissan Altima?

P1140 stands for "Intake Valve Timing Control Position Sensor Bank 1". Fault in VTC position sensor monitoring actual camshaft position.

What are the symptoms of P1140 on a Nissan Altima?

Common symptoms of P1140 include: CEL, Rough idle, Poor performance at certain RPM ranges.

What causes P1140 on a 2007-2012 Nissan Altima?

Common causes of P1140 include: Faulty CMP sensor, Damaged wiring, Oil contamination, Timing chain stretch.

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