P2757 – Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance

P2757 Possible Causes

  • Dirty transmission fluid
  • Faulty SLU line pressure solenoid valve
  • SLU line pressure solenoid harness is open or shorted
  • SLU line pressure solenoid circuit poor electrical connection
  • Torque converter clutch
  • Valve body is stuck

How to Fix Code P2757

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 pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2757 Meaning

The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent by the vehicle speed and the Engine Control Module (ECM). The lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lock-up clutch engages by creating a 1:1 rpm ratio between the transmission input shaft and the torque converter rotational speed.

However, lock-up is prohibited when the A/T fluid temperature is too low.

When the accelerator pedal is pressed (less than 2/8) under lock-up condition, the engine speed should not change abruptly. If there is a large jump in engine speed, there is no lock-up.

P2758 – Locked Torque Converter Clutch Pressure Control Solenoid Control Circuit

P2758 Possible Causes

  • Faulty torque converter clutch pressure control solenoid
  • Torque converter clutch pressure control solenoid circuit open or shorted
  • Poor electrical connection in torque converter clutch pressure control solenoid circuit

How to Fix Code P2758

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 pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2758 Meaning

The engine control module (ECM) monitors the torque converter clutch pressure control solenoid circuit signal. The ECM sets the OBDII code when the torque converter clutch pressure control solenoid is outside factory specifications.

P2759 – Electric Torque Converter Clutch Pressure Control Solenoid Control Circuit

P2759 Possible Causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty SLU shift solenoid valve
  • SLU shift solenoid valve harness is open or shorted
  • Poor electrical connection in the SLU shift solenoid valve circuit
    Stuck valve body

How to Fix Code P2759

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 pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2759 Meaning

The current flow to the solenoid is controlled by the ECM output signal’s duty cycle*. The higher the duty cycle, the greater the lock-up hydraulic pressure during lock-up operation.

P2760 – Intermittent Torque Converter Clutch Pressure Control Solenoid Control Circuit

P2760 Possible Causes

  • Faulty control solenoid assembly
  • Control solenoid assembly harness is open or shorted
  • Poor electrical connection in control solenoid assembly circuit

How to Fix Code P2760

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 pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2760 Meaning

The Torque Converter Clutch Pulse Width Modulation (PWM TCC) solenoid controls fluid acting on the torque converter clutch valve. The torque converter clutch valve controls TCC application and release. The solenoid mounts to the control valve body in the transmission. The solenoid receives ignition voltage through the OFF/ON/CRANK voltage circuit. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path on the TCC PWM solenoid control circuit. Current flows through the solenoid coil based on the duty cycle, the percentage of ON and OFF time. The TCC PWM solenoid provides smooth TCC engagement by operating during a duty cycle percentage of ON time.

P2761 – Torque Converter Clutch Pressure Control Solenoid Control Circuit / Open

P2761 Possible Causes

  • Faulty control solenoid assembly
  • Control solenoid assembly harness is open or shorted
  • Poor electrical connection in control solenoid assembly circuit

How to Fix Code P2761

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 pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2761 Meaning

The Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid controls the fluid acting on the torque converter clutch valve. The torque converter clutch valve controls the application and release of the TCC. The solenoid mounts to the control valve body in the transmission. The solenoid receives ignition voltage through the OFF/ON/CRANK voltage circuit. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path on the TCC PWM solenoid control circuit. Current flows through the solenoid coil based on the duty cycle, the percentage of ON and OFF time. The TCC PWM solenoid provides smooth TCC engagement by operating during a duty cycle percentage of ON time.

P2762 – Torque Converter Clutch Pressure Control Solenoid Control Circuit Range/Performance

P2762 Possible Causes

  • Faulty torque converter clutch pressure control solenoid
  • Torque converter clutch pressure control solenoid circuit open or shorted
  • Poor electrical connection in torque converter clutch control solenoid circuit
  • Clogged valve body oil passages

How to Fix Code P2762

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 pins.

Possible Symptoms

Illuminated check engine light (or service engine soon warning light)

P2762 Meaning

Ignition voltage is supplied to the pulse width modulated (PWM) torque converter clutch (TCC) solenoid. The powertrain control module (PCM) controls the activation and deactivation times of the TCC PWM solenoid by controlling the ground side of the TCC solenoid control circuit. The PCM uses a PWM duty cycle to control the application and release of the TCC. When the solenoid is commanded OFF, the PCM detects high voltage. When the solenoid is commanded ON, the PCM detects low voltage.

P2763 – High Torque Converter Clutch Pressure Control Solenoid Control Circuit

P2763 Possible Causes

  • Faulty torque converter clutch pressure control solenoid
  • Torque converter clutch pressure control solenoid circuit open or shorted
  • Poor electrical connection in torque converter clutch control solenoid circuit
  • Clogged valve body oil passages

How to Fix Code P2763

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 pins.

When is the Code Detected?

When the Powertrain Control Module (PCM) detects a short to voltage in the Torque Converter Clutch (TCC) solenoid control circuit, code P2763 is set.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)
Transmission shifting problems

P2763 Meaning

Ignition voltage is supplied to the Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) solenoid. The Powertrain Control Module (PCM) controls the TCC PWM solenoid on and off times by controlling the ground side of the TCC solenoid control circuit. The PCM uses a PWM duty cycle to control TCC application and release. When the solenoid is commanded OFF, the PCM detects high voltage. When the solenoid is commanded ON, the PCM detects low voltage.

Renault’s Electric Shift: Thermal Models Returning?

Electric Vehicle Sales Facing Headwinds

The electric vehicle market is navigating turbulent waters with a noticeable slowdown in new registrations. This shifting landscape is forcing manufacturers to reconsider their industrial strategies, with Renault potentially making significant adjustments to two of its flagship models.

Strategic Reassessment at Renault

Industry analysts suggest Renault is carefully evaluating its electric vehicle lineup in response to changing market dynamics. The automaker appears to be weighing options that could include reintroducing combustion engine versions for models that had previously transitioned to fully electric powertrains. This potential reversal represents a pragmatic approach to market realities rather than an abandonment of long-term electrification goals.

Model-Specific Considerations

The Mégane and Scénic models, both recently updated with electric-only e-Tech versions, are at the center of these strategic discussions. Market reception for these electric variants has been mixed, with consumers showing continued interest in traditional powertrain options. Renault’s potential move to reintroduce thermal versions demonstrates the complex balancing act automakers face between regulatory requirements and consumer preferences.

Market Adaptation in Real Time

This potential strategy shift highlights how quickly the automotive industry must adapt to changing consumer behavior. While governments continue pushing electrification agendas, actual buyer demand appears more measured. Renault’s consideration of maintaining both electric and combustion options for key models could represent a new industry approach to managing the transition period more effectively.

The final decision will likely depend on multiple factors including regulatory developments, charging infrastructure expansion, and evolving consumer attitudes toward different powertrain technologies. What remains clear is that the path to full electrification may be more complex and gradual than initially anticipated.

P2764 – Low Torque Converter Clutch Pressure Control Solenoid Control Circuit

P2764 Possible Causes

  • Faulty torque converter clutch pressure control solenoid
  • Torque converter clutch pressure control solenoid circuit open or shorted
  • Poor electrical connection in torque converter clutch control solenoid circuit
  • Clogged valve body oil passages

How to Fix Code P2764

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 pins.

When is the Code Detected?

When the Transmission Control Module (TCM) detects a continuous open or short to ground in the Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) solenoid circuit, code P2764 is set.

Possible Symptoms

  1. Illuminated MIL (Malfunction Indicator Light)
  2. Transmission shifting issues

P2764 Meaning

The Transmission Control Module (TCM) supplies voltage to the Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) solenoid via the High Side Driver 2 (HSD2). The TCM controls the solenoid on/off times by providing ground through the Output Driver Module (ODM). The TCM uses a PWM duty cycle to control TCC apply and release. When the solenoid is commanded OFF, the TCM detects high voltage. When the solenoid is commanded ON, the TCM detects low voltage.

P2767 Input/Turbine Speed Sensor B Circuit No Signal

Symptoms and Severity

In some cases, when this code is stored, it will prompt the PCM to place the transmission in “limp-in” mode. In this mode, the transmission will shift harshly. If a P2767 is presented and the transmission begins to operate erratically, the issue should be resolved as soon as possible.

Symptoms of a P2767 code may include:

  • Erratic or irregular transmission shift points
  • Transmission failure to shift
  • Decreased fuel efficiency
  • Fluctuation of the speedometer (odometer)
  • Lack of operation of the speedometer (odometer)
  • In some cases, when stopping, the engine may stall

Causes

Potential causes for setting this code are as follows:

  • Faulty input speed sensor B
  • Faulty output speed sensor B
  • Damaged, worn, or broken reluctor ring or shaft
  • Faulty transmission torque converter
  • Loose, burned, or otherwise damaged wiring and/or connectors
  • PCM failure or programming error

Diagnostic and Repair Procedures

A good starting point is always to check the technical service bulletins (TSBs) for your specific vehicle. Your issue may be a known problem with a known fix published by the manufacturer and can save you time and money during diagnosis.

A suitable diagnostic scanner, a digital volt/ohmmeter (DVOM), a system wiring diagram, and possibly an oscilloscope will be helpful in diagnosing the P2767 code.

Qualified technicians typically start with a visual inspection of the system’s wiring and connectors. Repair or replace any disconnected, corroded, burned, or short-circuited parts as necessary. Test the battery and inspect the cables and cable ends. Remove corrosion and secure the battery terminals as needed.

Connect the scanner to the diagnostic port and retrieve all stored codes. Take note of all stored codes for future reference. I also like to note the freeze frame data, if available.

If input sensor and output sensor codes are present, use the scanner’s data stream to determine the faulty circuit. Limit the data stream to include only relevant data for more responsive data delivery.

When removing the sensors, check for excessive metal debris on the magnetic contacts. Remove excessive debris before reinstalling. When the sensors are removed, inspect the interruption grooves and/or notches of the reluctor wheels. Test individual sensors using the DVOM and following the manufacturer’s specifications (found in the service manual or via AllData). Replace sensors that do not meet specifications.

Disconnect associated controllers before testing resistance and continuity with the DVOM. Failure to do so could damage the controller. Test the system circuits for shorted or open wiring. Repair or replace faulty circuits. If all system circuits and sensors are in good working order, suspect a faulty PCM or a PCM programming error.

Additional Diagnostic Notes:

  • Excessive metal debris (attracted by the electromagnetic sensor) is known to cause erratic input/output speed sensor readings
  • Be cautious when removing sensors from the transmission case as transmission fluid may leak from the opening
  • The gap between the sensor and the reluctor is critical in some applications; ensure that mounting surfaces/threaded holes are free of any obstructions