Engine-Codes - Generic - P1864

P1864 Code - Torque Converter Clutch Enable Solenoid Electrical Fault Conditions

- Code Popularity: 19,807 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1864?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Torque Converter Clutch (TCC)
  • Torque Converter Clutch (TCC) harness is open or shorted
  • Torque Converter Clutch (TCC) circuit poor electrical connection
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How to Fix the DTC P1864?

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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1864 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1864 Code Mean?

The Torque Converter Clutch (TCC) Solenoid Valve is an electrical device used with the TCC PWM Solenoid Valve in order to control the fluid acting on the TCC valve. The TCC valve controls TCC application and release. The solenoid is a normally-open, ON/OFF device. The TCC Sol. Valve attaches to the transmission case assembly extending into the pump cover. The Vehicle Control Module (VCM) monitors the Throttle Position (TP) voltage, the vehicle speed, and other inputs in order to determine when to energize the TCC Sol. Valve.
With the engine speed over 500 rpm for 5 seconds, not in Fuel Shut-off mode, the Powertrain Control Module (PCM) detects the Torque Converter Clutch (TCC) Solenoid Control voltage did not meet calibration (too high or too low). - Refer to the correct code repair chart in other manuals or media.

P1864 Code - Torque Converter Clutch Enable Solenoid Electrical Fault Conditions

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Code P1864 Information for Specific Makes

  • P1864 Buick Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 Cadillac Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 Chevrolet Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 GMC Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 Mitsubishi High Side 1 System Short To Power Supply
  • P1864 Oldsmobile Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 Pontiac Torque Converter Clutch Enable Solenoid Electrical Fault Conditions
  • P1864 Saturn Torque Converter Clutch Enable Solenoid Electrical Fault Conditions

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