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Home / DTC / P2760 — Torque Converter Clutch Pressure Control Solenoid Control Circuit Intermittent

P2760 — Torque Converter Clutch Pressure Control Solenoid Control Circuit Intermittent

Detailed page for trouble code P2760.

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P2760

Generic P — Powertrain

Torque Converter Clutch Pressure Control Solenoid Control Circuit Intermittent

Brand: Generic
Type: P — Powertrain
Views: UK: 17 EN: 25 RU: 21
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Page language: EN

Causes

  • Damaged or corroded connector or wiring causing intermittent connection
  • Faulty torque converter clutch pressure control solenoid
  • Poor or intermittent ground or battery supply to the circuit
  • Internal PCM/TCM driver fault
  • Contaminated or clogged transmission hydraulic passages affecting solenoid operation
  • Intermittent connector pin contact (water intrusion, corrosion, bent pins)

Symptoms

  • MIL (Check Engine light) illuminated, intermittent
  • Poor fuel economy or lower highway cruising comfort
  • Transmission may shudder, slip, or have rough/harsh shifts
  • Torque converter clutch may not lock or may lock/unlock intermittently
  • Possible limp-in/limited transmission functionality depending on vehicle

What to check

  • Read freeze frame and stored data; note conditions when fault set (RPM, speed, voltage)
  • Visual inspection of TCC solenoid connector and wiring for damage, corrosion, chafing
  • Check battery/charging system voltage under load
  • Backprobe connector and check for steady battery voltage and PCM control signal
  • Measure solenoid coil resistance and compare to spec
  • Wiggle test harness while monitoring signal to reproduce intermittent behavior

Signal parameters

  • Nominal solenoid coil resistance: typically ~5–40 ohms (varies by manufacturer) — compare to OEM spec
  • Supply (battery) voltage at harness: ~11–14.5 V when key on/engine running
  • Control method: PCM commonly uses PWM (pulse-width modulation) to vary pressure; duty cycle 0–100%
  • PWM frequency: typically in tens to a few hundred Hz (manufacturer-specific)
  • Expected behavior: stable PWM or switched output when commanded; no rapid dropouts or open-circuit readings

Diagnostic algorithm

  1. Retrieve and record freeze-frame data and all transmission-related codes; check for related codes (TCC or pressure control).
  2. Perform a careful visual inspection of the harness and connector at the TCC solenoid and along the wiring route for heat, chafe, or corrosion.
  3. With ignition on (engine off) backprobe the solenoid connector: verify battery feed present and good ground/PCM control signal. Note any intermittent voltage loss.
  4. Measure solenoid coil resistance with connector disconnected. Compare to factory specification. Replace solenoid if open or out-of-range.
  5. Use an oscilloscope to observe the PCM control waveform while commanding the solenoid (scan tool actuator test). Look for stable PWM and absence of dropouts, shorts to B+, or noise.
  6. Perform a wiggle test of wiring/connectors while monitoring voltage/waveform to reproduce intermittent condition.
  7. Check for voltage drops between battery and solenoid supply and between solenoid ground and chassis ground under load; repair any high-resistance connections.
  8. If wiring and solenoid check good, test continuity from solenoid connector to PCM pin. If intermittent or open, repair wiring or connector.
  9. If wiring and solenoid are good and PCM output is erratic, consider PCM/TCM fault — verify with manufacturer TSBs or module bench tests before replacement.
  10. After repairs, clear codes and perform road test under conditions similar to freeze frame to confirm fault does not return.

Likely causes

  • Broken/chafed wiring or loose connector at solenoid
  • Corroded terminal or poor pin contact
  • Failed or intermittent solenoid coil
  • Faulty PCM driver output (less common)
  • Hydraulic restriction or debris preventing proper solenoid movement

Fault status

⚠️ Status
PCM detected intermittent control circuit for torque converter clutch pressure control solenoid (open/short/intermittent). MIL set; TCC operation may be disabled or limited until fault cleared.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

P0740 P0741 P0742 P0743 P2761 P2762
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