A P0741 code in your 2023 Volvo XC90 indicates that the torque converter clutch is stuck in the disengaged position. When the TCM commands TCC lockup, the clutch fails to engage. This condition affects fuel efficiency and causes the transmission to run warmer than designed for sustained highway cruising.
TCC Stuck Off Implications
When the TCC won't engage, the torque converter continues to slip at all speeds. This slip generates heat and wastes energy that would otherwise transfer directly to the transmission. Your XC90's 8-speed automatic relies on TCC lockup for optimal efficiency during highway driving.
Common Causes
A stuck or failed TCC solenoid prevents engagement command. Valve body issues blocking hydraulic pressure to the TCC. Worn TCC friction material prevents engagement even with proper command. Low line pressure insufficient to apply the TCC. Wiring issues preventing the solenoid from activating.
Symptoms You'll Notice
Fuel economy drops, particularly on highway trips. Engine RPM seems higher than expected at highway speeds. The transmission may feel like it's working harder during cruising. Transmission temperature may run higher than normal. Check engine light with P0741 stored.
Volvo Diagnostic Approach
Using Volvo VIDA or dealer diagnostics, monitor TCC command and status during highway driving. When the TCM commands TCC on, does it engage? Check for slip speed (difference between engine and transmission input speed). Test TCC solenoid function. Verify hydraulic pressure in the TCC circuit. Check transmission fluid level and condition.