Code
P0741
Generic
P — Powertrain
Torque Converter Clutch Circuit Performance/Stuck Off
Views:
UK: 37
EN: 37
RU: 55
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0741
GWM
P — Powertrain
- Clutch is not adjusted correctly
Views:
UK: 11
EN: 13
RU: 28
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0741
HUMMER
P — Powertrain
TCC System Stuck Off
Views:
UK: 18
EN: 23
RU: 42
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0741
LAND ROVER
P — Powertrain
Torque Converter Clutch System Performance or blocked
Views:
UK: 19
EN: 20
RU: 41
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0741
MERCEDES-BENZ
P — Powertrain
Torque Converter Clutch Circuit Performance or Stuck Off
Views:
UK: 30
EN: 28
RU: 50
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0741
MITSUBISHI
P — Powertrain
DCC solenoid stuck OFF
Views:
UK: 20
EN: 24
RU: 46
AI status
Completed
Completed
100%
Causes
- Faulty torque converter clutch (TCC) solenoid or pressure control valve
- Open, shorted, or corroded wiring/connectors in TCC circuit
- Poor ground or low battery/charging voltage
- Low, contaminated, or incorrect automatic transmission fluid (ATF) level
- Internal transmission hydraulic or mechanical failure (worn clutch, valve body)
- PCM/TCM software or internal fault
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced fuel economy (TCC not locking up)
- Higher than normal engine RPM at highway speeds
- Transmission slipping, delayed or harsh engagement
- Shudder or vibration during attempted lockup
- Transmission temperature higher than normal
What to check
- Read and record freeze frame and full DTC list with a scan tool
- Check live data: TCC commanded state, TCC actual state, duty cycle, line pressure, vehicle speed, engine RPM
- Inspect TCC solenoid connector and wiring for corrosion, damage, pin push-out or chafing
- Measure solenoid resistance per manufacturer spec
- Verify battery and charging system voltage under load
- Check ATF level, condition, odor and color; inspect for metal or debris
Signal parameters
- TCC commanded signal (ON/OFF or duty cycle %)
- TCC actual/feedback (ON/OFF or apply pressure reading if available)
- TCC solenoid resistance (ohms) — compare to spec
- Battery/charging voltage (12–14.5 V)
- Transmission line pressure (psi) — varies by application
- Engine RPM and vehicle speed during lockup command
Diagnostic algorithm
- Retrieve freeze frame and scan tool data; note when code set (speed, RPM, temp).
- Verify ATF level and condition; top or change fluid if low/contaminated and retest.
- Visually inspect TCC solenoid harness and connector; repair any damaged wiring and ensure good pin contact.
- Disconnect TCC solenoid and measure resistance; compare to spec. If out of range, replace solenoid.
- With ignition on, backprobe solenoid connector and verify proper reference voltage and ground/PCM control signal (duty cycle or switched 12V) while commanding TCC on with a scan tool.
- Check for shorts to power or ground and for high resistance circuits; wiggle test wiring while monitoring live data for intermittent faults.
- If electrical side tests good, check transmission line pressure and perform a stall/drive test per service manual to verify mechanical apply of torque converter clutch.
- If hydraulic/mechanical problems are suspected (low pressure, internal leaks, clutch wear), consider valve body/service or transmission rebuild and consult service information/TSBs.
- Clear codes and test drive to confirm repair. If code returns, further module-level diagnostics or replacement (PCM/TCM) may be required after confirming wiring and mechanical integrity.
Likely causes
- Failed TCC solenoid (stuck or electrically faulty)
- Broken wire or poor pin connection at solenoid connector
- Low line pressure preventing clutch apply (worn pump or leaks)
- Contaminated ATF causing valve sticking
- PCM/TCM not commanding or not sensing TCC correctly
Fault status
Status
PCM/TCM reports Torque Converter Clutch Circuit Performance - clutch commanded but not performing as expected (stuck off). Monitor/inspect TCC solenoid, wiring, fluid and transmission hydraulic function.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Your experience will help others
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Was this AI description helpful?
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👍 Like
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0
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