P1768 Code Symptoms and Causes | How to fix P1768 Code?

What does P1768 Code Mean?

The P1768 OBDII diagnostic code indicates that the PCM notices that the current flowing through the A/T clutch pressure control solenoid valve is not within the designed range.

P1768 code

The A/T clutch pressure control solenoid valve is used to regulate shifting and lock-up regulation. A spool in the solenoid pushes the valve according to the duty cycle, which is controlled by the Powertrain Control Module (PCM) to pressurize the fluid so that the hydraulic pressure is proportional to the current.

The PCM measures the current flowing through the A/T clutch pressure control solenoid valve and uses the feedback setting to compensate for the difference between the expected and actual current. If the current measured for the PCM output duty cycle is not within a specified range (shorted or open to ground), a fault is detected, and the P1768 code is set.

Causes of the P1768 Code

  1. Faulty Clutch Pressure Control Solenoid Valve
  2. Clutch Pressure Control Solenoid Valve harness is open or shorted
  3. Clutch Pressure Control Solenoid Valve circuit poor electrical connection

P1768 Code Symptoms

  • A/T clutch malfunction
  • Illuminated check engine light

What repair can Fix the P1768 Code?

Follow the below-given steps to fix the P1768 code:

  1. Inspect and clean the clutch pressure control solenoid valve and replace it if needed.
  2. Perform electrical tests on the clutch pressure control solenoid circuit and the solenoid in question. The voltages detected in these checks should match the manufacturer’s specifications; otherwise, make the appropriate repairs.
  3. Properly check the related connectors and wiring harnesses.
  4. Inspect the corroded, pushed out, or bent connector’s pins.
  5. Inspect the damaged parts and replace them if needed.

Diagnose Cost of P1768 Code

The diagnostic or repair cost of the P1768 code varies according to the location, vehicle model, and repair type. Most auto repair shops charge between $70 and $160 per hour.

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