P2770 - Torque Converter Clutch Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty torque converter clutch solenoid valve
  • Torque converter clutch solenoid valve harness is open or shorted
  • Torque converter clutch solenoid valve circuit poor electrical connection

Possible symptoms

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

P2770 Description

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

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

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

OBDII Code P2770 - Torque Converter Clutch Circuit High - AutoCodes.com

P2770 Information for specific makes

  • P2770 ACURA Torque Converter Clutch Solenoid Valve Circuit (Open)
  • P2770 DODGE Torque Converter Clutch Circuit High
  • P2770 HONDA Open in Torque Converter Clutch Solenoid Valve Circuit
  • P2770 TOYOTA Torque Converter Clutch Solenoid Circuit High

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P2770 Comments

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