P1684

Code

MINI P — Powertrain

Electronic throttle control monitor level 2/3 - clutch torque min error

Brand: MINI

Type: P — Powertrain

Views: UK: 1 EN: 9 RU: 3

AI status

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Page language: EN

Causes

Faulty clutch torque sensor (open, shorted, out of range)
Damaged wiring or poor connector connections between sensor and control module
Clutch not engaging, slipping or mechanically binding (worn clutch, hydraulic issue)
Faulty electronic throttle control module or engine control module software/calibration
CAN bus or communication errors between modules
Intermittent sensor grounding or power supply fault

Symptoms

MIL (check engine light) illuminated
Reduced engine power or limp mode
Unexpected drivability issues during acceleration or takeoff
Poor or inconsistent clutch engagement, slipping or judder
Error messages related to throttle control or transmission on dash

What to check

Verify stored freeze-frame data and related DTCs; note conditions when fault set
Check for additional DTCs in engine, transmission and body CAN modules
Visually inspect clutch torque sensor connector and wiring for damage, corrosion, or loose pins
Check clutch hydraulic system (fluid level, leaks, pedal free play) if applicable
Scan live data for clutch torque signal, throttle position, pedal position, engine torque and relevant CAN messages
Verify battery voltage and engine/vehicle grounds

Signal parameters

Clutch torque sensor: expected active/valid signal (voltage or scaled torque value) — should not be constant 0V or out-of-range
Throttle position sensor (TPS): smooth range from idle to full throttle (typically 0.5–4.5 V or equivalent scaled value)
Accelerator pedal position sensors: two independent sensors should correlate
Engine torque request vs measured torque: control module compares expected torque to sensor feedback
CAN/CAN FD: relevant module message update rate (typically tens of ms); loss or errors indicate comms problem

Diagnostic algorithm

Read and record all related DTCs and freeze-frame data. Note vehicle state (engine temp, rpm, gear, pedal position) when the code set.
Clear codes and perform a controlled test drive to reproduce the fault. If intermittent, try conditions described in freeze frame.
Visually inspect connectors and wiring for the clutch torque sensor, throttle body and modules for corrosion, chafing or damage. Repair any physical faults.
Using a scan tool, monitor live data: clutch torque value, throttle position, pedal positions, engine torque request and module comms. Look for stuck, zero or implausible readings.
Measure sensor power and ground at the connector (with ignition on) and verify signal voltage changes with clutch actuation (follow safe workshop procedures).
Check clutch hydraulic system (fluid level, leaks, reservoir cap, pedal free play) or mechanical actuation for binding or slip if applicable.
Inspect CAN bus health (error counters, bus load) and check for other modules reporting faults. Repair bus faults before replacing sensors/modules.
If wiring and inputs are good but signal is implausible, consult latest software/TSB for module calibration updates. Reflash or update module software if advised by manufacturer.
If fault persists after wiring, sensor and software checks, consider replacing the clutch torque sensor or associated actuator module. Confirm repair by clearing codes and retesting.
Document repairs and recheck during representative driving conditions to ensure the issue is resolved.

Likely causes

Clutch torque sensor wiring damaged at harness or connector
Clutch torque sensor out of calibration or failed
Low clutch hydraulic pressure or air in hydraulic system allowing slip
Throttle control module detected unexpected low torque during monitoring routine
Intermittent CAN messages or module fault

Fault status

⚠️ Status

Clutch torque below minimum threshold detected during electronic throttle control monitor (level 2/3). Check clutch torque sensor, wiring, clutch actuation and module communications.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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P1684 — Electronic throttle control monitor level 2/3 - clutch torque min error