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Home/DTC Codes/Nissan/Altima/2007-2012 2.5L I4/P0740
P0740

Torque Converter Clutch Circuit Malfunction

2007-2012 Nissan Altima 2.5L I4

Moderate SeverityPowertrainGeneric (SAE)

Description

Malfunction in the torque converter clutch (TCC) solenoid circuit.

Symptoms

  • Check Engine Light
  • No lockup feel (higher RPM at highway)
  • Poor fuel economy
  • Transmission overheating

Common Causes

  • Faulty TCC solenoid
  • Wiring issue
  • PCM driver failure
  • Torque converter failure

Diagnostic Steps

  1. Test TCC solenoid resistance
  2. Check wiring
  3. Command TCC engagement with scan tool
  4. Monitor RPM drop during lockup command

Repair Notes

Replace TCC solenoid or repair wiring. Solenoid is often inside transmission.

Related Codes

P0741Torque Converter Clutch Circuit Performance/Stuck OffP0742Torque Converter Clutch Circuit Stuck On

Other Powertrain Codes

P0740 on Other Vehicles

Nissan 200SX

1995-1998 1.6L I4 GA16DE

Nissan 200SX SE-R

1995-1998 2.0L I4 SR20DE

Nissan 240SX

1995-1998 2.4L I4 KA24DE

Nissan 300ZX

1990-1996 3.0L V6 VG30DE

Nissan 300ZX Twin Turbo

1990-1996 3.0L Twin-Turbo V6 VG30DETT

Nissan 350Z

2003-2006 3.5L V6 VQ35DE

Nissan 350Z

2007-2009 3.5L V6 VQ35HR

Nissan 370Z

2009-2020 3.7L V6 VQ37VHR

Common Questions

What does code P0740 mean on a 2007-2012 Nissan Altima?

P0740 stands for "Torque Converter Clutch Circuit Malfunction". Malfunction in the torque converter clutch (TCC) solenoid circuit.

What are the symptoms of P0740 on a Nissan Altima?

Common symptoms of P0740 include: Check Engine Light, No lockup feel (higher RPM at highway), Poor fuel economy, Transmission overheating.

What causes P0740 on a 2007-2012 Nissan Altima?

Common causes of P0740 include: Faulty TCC solenoid, Wiring issue, PCM driver failure, Torque converter failure.

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